Right click on my computer>Properties.
System Properties should come up, go to the system restor tab and disable system restore.
Then go to:
Start> All programs/programs>Accessories>System Tools>Disk Cleanup
Once you have clicked on that, let it do its funky thing, then go to:
Where is says System Restore, click on clean up then a nother little pop up comes up, click YES
THis has cleaned out your system restore things