Wow. That's definately a new one if I've ever seen it. Has it always been like this, or has something changed in the last few days? If something has changed, try using System Restore to restore your system to an earlier time. We will need more information about this one.
What version of Windows 7 are you running? Was it an upgrade or clean install? When did the problem start?
Here is some info
im running xp and windows 7 (installed on diffrent drives)
i have 1gb ram
Windows 7 updates center were working fine yesterday
i had installed magic disk and uninstalled it today
im using windows 7 ultimate