it's not just limited user accounts
I have a Game profile that has full rights and it done it to it also
after last update it only done it to my game profile and it redirected it to C:\Documents and Settings\TEMP

in the registry
I had to change it back to Game

I think it might have to something to do with a early crash or shutdown
it's not putting things back, useing the X would be constiered a unproper shutdown