i was using ubuntu installed on a usb stick (not live cd) on me mums windows 7 computer,
after i'd finished i shut down, everything was good,

but when my mum rebooted up her windows 7 later it asked her if she wanted to do a system restore?

she clicked no

then it give her a list of what was 'wrong' with her computer, and kept asking her would she like to install stuff onto it. lots of 'numbers' is what she said.

she kept clicking no and after a while it started working again...

maybe someone here has some clue what was going on, can't really give any more info as i wasn't there.

but i though if you used ubuntu from a usb stick the person would not know you'd accessed there computer?

and ideas?

cheers