I have Vista Ultimate SP1 on my PC at home.

In the past, it would have many restore points kept if I needed to restore back to.

Lately, when I checked back in System Restore, I saw only 4 restore points. And worse, the checkbox at the bottom of the screen that shows the last 5 restore points was missing! (The "check this box to see restore points older than 5 days").

I have about 20 Gig available on my C drive for the system restore points, and about 50 gig available on my D: drive. I can't see 4 restore points taking ujp to 70 gigs of space.

Can this checkbox come and go like this? Or is it gone for good since the SP1 upgrade??