|The Glossary in Windows Help defines|
The profile that serves as a basis for all user profiles. Every user profile begins as a copy of the default user profile.
I am thinking that some data in that folder may be corrupted because when you create a new account, that account has the same problem.
Do you have this folder in Windows Explorer ---
C:\Documents and Settings\Default User
If so, then something in there may be corrupted ????
You may want to check for bad sectors on your harddrive, and repair ---
How to Perform Disk Error Checking in Windows XP
In the meantime, watch for help from others, and I will look around myself. May take awhile for me to get back.