I don't know the official way to report a bug, and I wasn't sure if anyone else had seen this (a quick browse of the forum didn't show it). With the change in 2.2 for the screen for entering the passcode (placing the emergency call button where the switch to numbers button used to be) I have found that if I hit the emergency phone button at all I can not enter the valid passcode on my phone. It says wrong passcode at the top even though its the exact same passcode I always enter. A workaround is that you can reboot the device and as long as you don't hit the emergency call button you can enter your passcode just fine. Hopefully if your having this problem you get to read this before you accidentally lock out your phone.
/edit - i forgot to mention this is with an 8g original iphone
/edit - i forgot to mention this is with an 8g original iphone