I have Windows XP Media Center Edition on my computer and I'm the only user.
Over the yrs I have done 4 complete system restores on the computer. Each
time I've done one a strange folder appears on a secondary drive. It's always
just a jumble of letters and numbers, like this:

1f51b16e8f7767f039c58f34385d83f3

I can't either access the folders or delete them. I've tried to change the
attributes from read only but that doesn't work and when I've tried to delete
the folders I get 'access is denied' error messages.

Can anyone please help?