Problems with Snow Leopard and users

Question

I have upgraded 3 x 10.5 iMacs to 10.6. They have been working fine for the last 2 months, but now have some strange problems on the units.
1. On the one, it cannot save documents on the iMac under that user. If I create another user, then that new user can save documents. Is there anyway to correct this. It seems like a permissions issue.
2. On the second unit it won't allow the user to convert documents with the MS OpenXML converter from 2008 to 2004 files. But if I create a new user, then that new user can convert the files.
3. And on the third unit, the user can't print certain documents, but guess what when you create a new user, that user can print the certain documents.
It seems like a corrupt user file somewhere that is specific to 10.6. Has anyone else had these issues?
I wanna check if there are any fixes before I start moving user data from corrupt accounts to new accounts. Maybe there is an easier solution.

Answer 1

  Thanks for the feedback. Here's the second way.
While logged into the newly created admin account, backup the bad account's folder, delete the bad account, selecting the save data option (which is stored in /Users/Deleted Users/ as a disk image), recreate the bad account using the same username/password combo, log out and back into the recreated original account. If the problem's solved, open the saved data dmg file in /Users/Deleted Users/, open the /Library/Preferences/ folder from the saved data, open the current /Users/restored account/Library/Preferences/ folder, and slowly copy plist files from the saved data folder to the current one that don't exist in it. Log out and back in to ensure there's no conflict and things still work correctly. Resolving conflicts or identifying corrupt plist files is a laborious process.