Currently Being ModeratedMay 2, 2012 9:30 AM (in response to xxqiao)
I guess I would try trashing the Dock preferences.
In the Finder, hold the option key while using the Go menu. Select "Library".
From the LIbrary folder, open the Preferences folder. Trash anything with com.apple.dock" in it.
In the Preferences folder there is a "ByHost" folder. From there trash "com.apple.dock" stuff.
Maybe that will fix it.
Currently Being ModeratedMay 2, 2012 9:33 AM (in response to xxqiao)
Click in the middle of any desktop to make Finder active.
In the menubar at the top, click the 'Go' menu. Hold down the 'option' key on your keyboard and you should see 'Library' appear in the menu. Click on it.
Preferences > com.apple.dock.plist
Delete that file.
Log out of your user account and then log back in (or restart your Mac).
Currently Being ModeratedMay 2, 2012 7:08 PM (in response to xxqiao)
I have just faced this problem all of a sudden. Whatever you guys suggested it solved the problem. Thanks.
But the dock is not behaving as it was behaving before. Now what is happening is that whenever I am minimizing any running application it is taking a new position in Dock instead of going to the same bucket where the application lies in Dock (which used to happen before).
Do not understand why my mac is suddenly behaving like this. Is this bug or virus?
Currently Being ModeratedMay 2, 2012 7:58 PM (in response to kousikm)
Go to the Apple > Dock > Dock preference. Make sure the option "Minimize windows into application icon" is checked. Then, you will dock will work as fine. Mine is solved in this way. It seems that the deletion of the preference file reinitialize the Dock to its most basic mode. Personalize it again.
Currently Being ModeratedMay 2, 2012 8:19 PM (in response to xxqiao)
Yes. I unknowingly set all my preferences again. It is working fine now.
Currently Being ModeratedFeb 21, 2014 8:02 AM (in response to xxqiao)
Fix works like a champ. Thanks.