Hi, I'm getting this error whenever I try to open a folder, attach something from any of the Office programs, it started with Outlook.

Error: "The process cannot access the file because it is being used by another process"

My specs:

Windows Server 2003 Enterprise.
Office 2003

I have updated from Windows Update, I have run antivirus, checked for spyware.

Also this is happening when I connect from a Terminal Server console. The strange thing is that it just happened couple of days ago, at the beginning it was working fine.