I recently reinstalled Snow Leopard on a mid 2009 MacBook Pro. Everything was great to start but recently the user seems to be having an issue with Finder items. Any files copied down to the Finder from a server or another local folder seem to be duplicating themselves. This does not apply to folders, only files. Files within folders are also unaffected.
Additionally, there were some installers located on the desktop that were present before this problem occured that now refuse to function. The user gets an error message stating the installer files can't be found even though they're right in front of her. Several people are using the same installer, downloaded from the same server, using the same OS etc and nobody else is having issues. Downloading the installer again has no affect. However, moving the installer from the Finder into a folder does work.If it's sitting on the desktop it doesn't. The only thing that has changed recently is that someone activated FileVault. I don't see how that would cause this issue, though.
Finally, the recently installed Office 2011 apps aren't functioning. They either hang up during launch or if she's able to create a document it can't be saved. There's an error message stating the the file cannot be created or saved.
My only guesses are that either the OS needs to be reinstalled (we're upgrading to 10.8 shortly) or that perhaps the user account is causing the issue. If I had the machine in front of me I could poke around but I provide remote support so I need an idea as to what I'm looking at/for before I can suggest a course of action.
Anyone have any ideas? OnyX has been run a few times from what I'm told and has had no affect.