On Aug 2, 2007, at 3:54 PM, Stu Cram wrote:

> Hi - Hope some of the Mac experts here might be able to help with  
> this problem.  I no longer can add items to or remove items items  
> from the Dock. I am using OS-X 10.4.8 and in the main admin account.
What does it do when you try to remove an item from the dock?


>
> Any suggestions of what to do?
Aside from doing the usual maintenance items (i.e. onyX etc.),  there  
is a chance the dock plist is corrupt. You could try deleting it but  
you will probably have to add ALL your icons back into the dock  
manually. The name of the plist is com.apple.dock.plist in the user  
prefs folder. BTW: onyX does reset the Launch Services database and  
that is sometimes (but not often) the cause of problems.  My first  
stop would be the MacFixit database to see if anything has been  
reported. Second, maybe try onyx - but limit it to the LS database.   
Lastly, maybe try the plist delete.

Good luck.

Brian S.