More information please!
Some people don't want to understand what has been written before.
So again.
Apple knows about this issue and there is NO fix for this. Whatever you do, it will always revert to the same problem (memory hashes that cannot be released on shutdown).
This means: we will have to wait for a OSX update to fix it.
Atarikid,
Hello, I have filed a bug report with Apple last afternoon, I was wondering where you got this information that Apple is aware of this issue. Did you get this from AppleCare?
To other posters,
Now, I would like that anyone that is experiencing this issue to do the following with their Macs. I would like you guys to boot them in Verbose mode, this function will make your Mac show a BIOS type boot up (don't worry, the computer will automatically switch to a normal OS X GUI mode when it gets into the user account or log in screen. When it comes time for a shutdown, the computer will switch to BIOS mode again and show which processes are running at shutdown time and which are taking the longest.
To boot your Mac in verbose mode do the following steps as outlines on this Apple Support Article (located at
http://support.apple.com/kb/HT1492):
Starting up in verbose mode:
1. Shut down your Mac if it is on.
2. Press the power button to start the computer.
3. Immediately press and hold the Command (Apple) key any of the following:
the "v" key for verbose mode. (Command-V).
In my case what is holding up the shutdown is the launchd.peruser.501 process. I saw that during the shutdown the system made multiple attempts to close it down and it took the computer about 20 seconds to do so.
If my theory is correct, that same process should show on most Macs that are experiencing the issue. This is happening to me on a Mac that has had to clean installs of OS X Mountain Lion 10.8.2 using the "full" Mac App Store 10.8.2 installer which was released about 2 weeks ago.
In addition to that theory, a member in the Apple Support forums mentioned that the issue seems to be derived to a persistently enabled Resume feature that is trying to save the computer's state during shutdown. You can read the topic here:
https://discussions.apple.com/message/19800407#19800407
That's my insight and I would appreciate any help on this matter in order to build a good case on this bug and provide evidence to Apple engineering that this long shutdown issue in OS X Mountain Lion is a legitimate one!
Again thanks!