Check your login items, you have something starting up automatically and causing this - something that isn't loaded when booting into Safe Mode. Do you have any kind of network monitor or security running?
Maybe security...
[doublepost=1460347876][/doublepost]
Safe mode prevents certain software from running.
You have something in your system (not YOUR user, as you said the same problem also exists in another user account, correct?)
So, it's some part of your system software, or some app that runs, common to all users, but is stopped when you booted into safe mode.
Here's an idea - download and run the utility
EtreCheck, then post the results here. That may show some software that can be reported through EtreCheck, and might be your troublemaker....
Ok, I'll try that
[doublepost=1460348494][/doublepost]
Safe mode prevents certain software from running.
You have something in your system (not YOUR user, as you said the same problem also exists in another user account, correct?)
So, it's some part of your system software, or some app that runs, common to all users, but is stopped when you booted into safe mode.
Here's an idea - download and run the utility
EtreCheck, then post the results here. That may show some software that can be reported through EtreCheck, and might be your troublemaker....
EtreCheck will show the startup software that simonsi was asking about.
I selected "just checking". Here is what I got:
EtreCheck version: 2.9.10 (261)
Report generated 2016-04-10 21:16:32
Download EtreCheck from
https://etrecheck.com
Runtime 3:51
Performance: Good
Click the [Support] links for help with non-Apple products.
Click the [Details] links for more information about that line.
Click the [Remove] links to remove adware.
Problem: No problem - just checking
Hardware Information: ⓘ
MacBook Pro Intel Core i5, Intel Core i7 (Mid 2010)
[Technical Specifications] - [User Guide] - [Warranty & Service]
MacBook Pro - model: MacBookPro6,2
1 2.66 GHz Intel Core i7 CPU: 2-core
4 GB RAM Upgradeable - [Instructions]
BANK 0/DIMM0
2 GB DDR3 1067 MHz ok
BANK 1/DIMM0
2 GB DDR3 1067 MHz ok
Bluetooth: Old - Handoff/Airdrop2 not supported
Wireless: en1: 802.11 a/b/g/n
Battery: Health = Check Battery - Cycle count = 980
Video Information: ⓘ
Intel HD Graphics - VRAM: 288 MB
NVIDIA GeForce GT 330M - VRAM: 512 MB
Color LCD 1680 x 1050
System Software: ⓘ
OS X Mavericks 10.9.5 (13F1077) - Time since boot: about 2 hours
Disk Information: ⓘ
ST9500420ASG disk0 : (500.11 GB) (Rotational)
EFI (disk0s1) <not mounted> : 210 MB
Macintosh HD (disk0s2) / : 499.25 GB (264.56 GB free) - 4 errors
Drive failure!
Recovery HD (disk0s3) <not mounted> [Recovery]: 650 MB
MATSHITADVD-R UJ-898 ()
USB Information: ⓘ
Apple Inc. BRCM2070 Hub
Apple Inc. Bluetooth USB Host Controller
Apple Internal Memory Card Reader
Apple Inc. Apple Internal Keyboard / Trackpad
Apple Inc. Built-in iSight
Apple Computer, Inc. IR Receiver
Gatekeeper: ⓘ
Mac App Store and identified developers
Adware: ⓘ
/Library/LaunchDaemons/com.Vertumnus.net-preferences.plist
/Library/LaunchDaemons/com.cyathophyllineUpd.plist
~/Library/Caches/com.apple.Safari/Extens...safariextension
~/Library/Caches/com.apple.Safari/Extens...safariextension
~/Library/Caches/com.apple.Safari/Extensions/Searchme.safariextension
5 adware files found. [Remove]
Kernel Extensions: ⓘ
/Applications/Parallels Desktop.app
[not loaded] com.parallels.kext.hidhook (8.0 18354.823166 - 2012-12-15) [Support]
[not loaded] com.parallels.kext.hypervisor (8.0 18354.823166 - 2012-12-15) [Support]
[not loaded] com.parallels.kext.netbridge (8.0 18354.823166 - 2012-12-15) [Support]
[not loaded] com.parallels.kext.usbconnect (8.0 18354.823166 - 2012-12-15) [Support]
[not loaded] com.parallels.kext.vnic (8.0 18354.823166 - 2012-12-15) [Support]
/Applications/Voxal.app
[not loaded] com.NCHSoftware.driver.VoxalVirtualAudioDevice (1.0.2 - SDK 10.6 - 2015-02-03) [Support]
/Incompatible Software/Parallels Service.app
[not loaded] com.parallels.kext.prl_hid_hook (6.0 12094.676494 - 2012-07-30) [Support]
[not loaded] com.parallels.kext.prl_hypervisor (6.0 12094.676494 - 2012-07-30) [Support]
[not loaded] com.parallels.kext.prl_netbridge (6.0 12094.676494 - 2012-07-30) [Support]
[not loaded] com.parallels.kext.prl_usb_connect (6.0 12094.676494 - 2012-07-30) [Support]
[not loaded] com.parallels.kext.prl_vnic (6.0 12094.676494 - 2012-07-30) [Support]
/System/Library/Extensions
[not loaded] com.Belcarra.iokit.USBLAN_netpart (2.0.2 - 2016-04-10) [Support]
[not loaded] com.Belcarra.iokit.USBLAN_usbpart (2.0.2 - 2016-04-10) [Support]
[not loaded] com.RemoteControl.USBLAN.usbpart (2.0.6 - 2016-04-10) [Support]
[loaded] com.ScreamingBee.driver.SBVirtualMic64 (1.1.0 - SDK 10.9 - 2016-04-10) [Support]
[not loaded] com.cisco.nke.ipsec (2.0.1 - 2016-04-10) [Support]
/System/Library/Extensions/Belcarra.USBLAN_netpart.kext/Contents/PlugIns
[not loaded] com.belcarra.iokit.netpart.panther (1.6.1 - 2007-06-06) [Support]
/System/Library/Extensions/Belcarra.USBLAN_usbpart.kext/Contents/PlugIns
[not loaded] com.belcarra.iokit.usbpart.panther (1.6.1 - 2007-06-06) [Support]
/System/Library/Extensions/RemoteControl.USBLAN_usbpart.kext/Contents/PlugIns
[not loaded] com.RemoteControl.USBLAN.panther (1.6.1 - 2007-06-06) [Support]
Startup Items: ⓘ
CiscoVPN: Path: /System/Library/StartupItems/CiscoVPN
Startup items are obsolete in OS X Yosemite
System Launch Agents: ⓘ
[not loaded] 7 Apple tasks
[loaded] 143 Apple tasks
[running] 34 Apple tasks
System Launch Daemons: ⓘ
[not loaded] 46 Apple tasks
[loaded] 138 Apple tasks
[running] 65 Apple tasks
Launch Agents: ⓘ
[loaded] com.google.keystone.agent.plist (2016-03-02) [Support]
Launch Daemons: ⓘ
[running] com.Vertumnus.net-preferences.plist (2016-03-12) Adware! [Remove]
/etc/change_net_settings.sh
[failed] com.adobe.fpsaud.plist (2015-09-09) [Support]
[loaded] com.apple.aelwriter.plist
[loaded] com.cyathophyllineUpd.plist (2016-03-12) Adware! [Remove]
/etc/st-up.sh
[loaded] com.google.keystone.daemon.plist (2016-03-02) [Support]
[running] com.mackeeper.MacKeeper.plugin.AntiTheft.daemon.plist (2015-08-20) [Support]
[loaded] com.microsoft.office.licensing.helper.plist (2010-08-25) [Support]
[running] com.sec.faxdb.plist (2010-10-07) [Support]
[loaded] com.skype.skypeinstaller.plist (2014-11-29) [Support]
[failed] com.vmware.launchd.vmware.plist (2010-11-30) [Support]
User Launch Agents: ⓘ
[loaded] com.adobe.ARM.[...].plist (2015-09-12) [Support]
[loaded] com.valvesoftware.steamclean.plist (2016-01-30) [Support]
User Login Items: ⓘ
iTunesHelper Application (/Applications/iTunes.app/Contents/MacOS/iTunesHelper.app)
Skype Application Hidden (/Applications/Skype.app)
SPanel Application (/Library/Printers/SPanel/Samsung/SPanel.app)
DaemonManager Application (/Library/Printers/Samsung/Daemon/DaemonManager/DaemonManager.app)
Other Apps: ⓘ
[running] [0x0-0x1d01d].com.fiplab.memoryclean
[running] [0x0-0x2b02b].com.etresoft.EtreCheck
[running] [0x0-0x7007].com.google.Chrome
[running] com.Samsung.DaemonManager.45968
[running] com.Samsung.SPanel.45616
[running] com.skype.skype.7424
[loaded] 429 Apple tasks
[running] 310 Apple tasks
Internet Plug-ins: ⓘ
Google Earth Web Plug-in: 6.0 (2011-05-17) [Support]
Default Browser: 537 - SDK 10.9 (2014-10-22)
Flip4Mac WMV Plugin: 2.3.5.4 (2010-09-10) [Support]
OfficeLiveBrowserPlugin: 12.2.7 (2010-10-16) [Support]
Unity Web Player: UnityPlayer version 4.6.1f1 - SDK 10.6 (2015-01-15) [Support]
Silverlight: 5.1.30317.0 - SDK 10.6 (2015-12-23) [Support]
FlashPlayer-10.6: 19.0.0.185 - SDK 10.6 (2015-09-21) [Support]
Flash Player: 19.0.0.185 - SDK 10.6 (2015-09-21) Outdated! Update
QuickTime Plugin: 7.7.3 (2015-08-23)
iPhotoPhotocast: 7.0 - SDK 10.8 (2013-05-03)
SharePointBrowserPlugin: 14.3.4 - SDK 10.6 (2013-05-11) [Support]
AdobePDFViewer: 9.5.5 (2013-05-21) [Support]
JavaAppletPlugin: Java 7 Update 09 (2012-11-21) Check version
User internet Plug-ins: ⓘ
NPRoblox: 1, 2, 8, 25 - SDK 10.11 (2015-12-09) [Support]
Safari Extensions: ⓘ
Searchme (cache only) (2015-08-18) Adware! [Remove]
Amazon Shopping Assistant (cache only) (2015-08-09) Adware! [Remove]
Ebay Shopping Assistant (cache only) (2015-08-09) Adware! [Remove]
3rd Party Preference Panes: ⓘ
Flash Player (2015-09-09) [Support]
Flip4Mac WMV (2010-09-10) [Support]
MacFUSE (2010-09-02) [Support]
Perian (2015-12-23) [Support]
Time Machine: ⓘ
Skip System Files: NO
Mobile backups: OFF
Auto backup: YES
Volumes being backed up:
Macintosh HD: Disk size: 499.25 GB Disk used: 234.69 GB
Destinations:
JF_BackUp3 [Local]
Total size: 0 B
Total number of backups: 0
Oldest backup: -
Last backup: -
Size of backup disk: Too small
Backup size 0 B < (Disk used 234.69 GB X 3)
Top Processes by CPU: ⓘ
91% Google Chrome Helper(5)
12% Google Chrome
9% fontd
6% kernel_task
6% WindowServer
Top Processes by Memory: ⓘ
442 MB kernel_task
401 MB Google Chrome Helper(5)
209 MB Skype
102 MB Google Chrome
82 MB mds_stores
Virtual Memory Information: ⓘ
574 MB Free RAM
2.82 GB Used RAM (886 MB Cached)
0 B Swap Used
Diagnostics Information: ⓘ
Apr 10, 2016, 09:15:46 PM /Library/Logs/DiagnosticReports/Vertumnus_2016-04-10-211546_[redacted].crash
/Library/Vertumnus/*/Vertumnus
Apr 10, 2016, 09:15:35 PM /Library/Logs/DiagnosticReports/Vertumnus_2016-04-10-211535_[redacted].crash
Apr 10, 2016, 09:15:25 PM /Library/Logs/DiagnosticReports/Vertumnus_2016-04-10-211525_[redacted].crash
Apr 10, 2016, 09:15:14 PM /Library/Logs/DiagnosticReports/Vertumnus_2016-04-10-211514_[redacted].crash
Apr 10, 2016, 09:15:04 PM /Library/Logs/DiagnosticReports/Vertumnus_2016-04-10-211504_[redacted].crash
Apr 10, 2016, 09:14:54 PM /Library/Logs/DiagnosticReports/Vertumnus_2016-04-10-211454_[redacted].crash
Apr 10, 2016, 09:14:44 PM /Library/Logs/DiagnosticReports/Vertumnus_2016-04-10-211444_[redacted].crash
Apr 10, 2016, 09:14:33 PM /Library/Logs/DiagnosticReports/Vertumnus_2016-04-10-211433_[redacted].crash
Apr 10, 2016, 09:14:23 PM /Library/Logs/DiagnosticReports/Vertumnus_2016-04-10-211423_[redacted].crash
Apr 10, 2016, 09:14:12 PM /Library/Logs/DiagnosticReports/Vertumnus_2016-04-10-211412_[redacted].crash
Apr 10, 2016, 09:14:02 PM /Library/Logs/DiagnosticReports/Vertumnus_2016-04-10-211402_[redacted].crash
Apr 10, 2016, 09:13:52 PM /Library/Logs/DiagnosticReports/Vertumnus_2016-04-10-211352_[redacted].crash
Apr 10, 2016, 09:13:41 PM /Library/Logs/DiagnosticReports/Vertumnus_2016-04-10-211341_[redacted].crash
Apr 10, 2016, 09:13:31 PM /Library/Logs/DiagnosticReports/Vertumnus_2016-04-10-211331_[redacted].crash
Apr 10, 2016, 09:13:21 PM /Library/Logs/DiagnosticReports/Vertumnus_2016-04-10-211321_[redacted].crash
Apr 10, 2016, 09:13:10 PM /Library/Logs/DiagnosticReports/Vertumnus_2016-04-10-211310_[redacted].crash
Apr 10, 2016, 09:13:00 PM /Library/Logs/DiagnosticReports/Vertumnus_2016-04-10-211300_[redacted].crash
Apr 10, 2016, 09:12:50 PM /Library/Logs/DiagnosticReports/Vertumnus_2016-04-10-211250_[redacted].crash
Apr 10, 2016, 09:12:39 PM /Library/Logs/DiagnosticReports/Vertumnus_2016-04-10-211239_[redacted].crash
Apr 10, 2016, 09:12:29 PM /Library/Logs/DiagnosticReports/Vertumnus_2016-04-10-211229_[redacted].crash
Apr 10, 2016, 06:40:06 PM Self test - passed
Apr 10, 2016, 05:50:43 PM /Library/Logs/DiagnosticReports/softwareupdated_2016-04-10-175043_[redacted].crash
/System/Library/CoreServices/Software Update.app/Contents/Resources/softwareupdated
Apr 10, 2016, 05:49:55 PM /Library/Logs/DiagnosticReports/softwareupdated_2016-04-10-174955_[redacted].crash
Apr 10, 2016, 05:48:35 PM /Library/Logs/DiagnosticReports/softwareupdated_2016-04-10-174835_[redacted].crash
Apr 10, 2016, 05:47:19 PM /Library/Logs/DiagnosticReports/softwareupdated_2016-04-10-174719_[redacted].crash
Apr 10, 2016, 05:46:05 PM /Library/Logs/DiagnosticReports/softwareupdated_2016-04-10-174605_[redacted].crash
Apr 10, 2016, 05:44:41 PM /Library/Logs/DiagnosticReports/softwareupdated_2016-04-10-174441_[redacted].crash
Apr 10, 2016, 05:43:03 PM /Library/Logs/DiagnosticReports/softwareupdated_2016-04-10-174303_[redacted].crash
Apr 10, 2016, 05:41:21 PM /Library/Logs/DiagnosticReports/softwareupdated_2016-04-10-174121_[redacted].crash
Apr 10, 2016, 05:39:57 PM /Library/Logs/DiagnosticReports/softwareupdated_2016-04-10-173957_[redacted].crash
Apr 10, 2016, 05:37:21 PM /Library/Logs/DiagnosticReports/softwareupdated_2016-04-10-173721_[redacted].crash
Apr 10, 2016, 05:36:04 PM /Library/Logs/DiagnosticReports/softwareupdated_2016-04-10-173604_[redacted].crash
Apr 10, 2016, 05:34:22 PM /Library/Logs/DiagnosticReports/softwareupdated_2016-04-10-173422_[redacted].crash
Apr 10, 2016, 05:10:07 PM ~/Library/Logs/DiagnosticReports/iTunes_2016-04-10-171007_[redacted].crash
com.apple.iTunes - /Applications/iTunes.app/Contents/MacOS/iTunes
Apr 10, 2016, 04:40:21 PM /Library/Logs/DiagnosticReports/iPhoto_2016-04-10-164021_[redacted].hang
/Applications/iPhoto.app/Contents/MacOS/iPhoto
Apr 10, 2016, 04:37:04 PM ~/Library/Logs/DiagnosticReports/iTunes_2016-04-10-163704_[redacted].crash
Apr 10, 2016, 04:34:40 PM ~/Library/Logs/DiagnosticReports/iTunes_2016-04-10-163440_[redacted].crash
Apr 10, 2016, 04:33:13 PM ~/Library/Logs/DiagnosticReports/iTunes_2016-04-10-163313_[redacted].crash
Apr 10, 2016, 04:32:10 PM ~/Library/Logs/DiagnosticReports/iTunes_2016-04-10-163210_[redacted].crash
Apr 10, 2016, 01:48:24 AM /Library/Logs/DiagnosticReports/softwareupdated_2016-04-10-014824_[redacted].crash
Apr 10, 2016, 01:47:18 AM /Library/Logs/DiagnosticReports/softwareupdated_2016-04-10-014718_[redacted].crash
Apr 10, 2016, 01:45:15 AM /Library/Logs/DiagnosticReports/softwareupdated_2016-04-10-014515_[redacted].crash
Apr 10, 2016, 01:43:58 AM /Library/Logs/DiagnosticReports/softwareupdated_2016-04-10-014358_[redacted].crash
Apr 10, 2016, 01:42:38 AM /Library/Logs/DiagnosticReports/softwareupdated_2016-04-10-014238_[redacted].crash
Apr 10, 2016, 01:41:24 AM /Library/Logs/DiagnosticReports/softwareupdated_2016-04-10-014124_[redacted].crash
Apr 10, 2016, 01:40:02 AM /Library/Logs/DiagnosticReports/softwareupdated_2016-04-10-014002_[redacted].crash
Apr 10, 2016, 01:38:52 AM /Library/Logs/DiagnosticReports/softwareupdated_2016-04-10-013852_[redacted].crash
Apr 9, 2016, 10:48:53 PM ~/Library/Logs/DiagnosticReports/iTunes_2016-04-09-224853_[redacted].crash
I'm going to make sure that adware is removed