My sister's computer freezes up alot, i don't really know too much about computers, however, when i looked in the task manager under processes i found that the image name svchost.exe, user name system, is using up all of her cpu. could this be her problem with the computer freezing up on her? and if it is, is there anything i can do to help her out? or does anyone else have any ideas on how i can fix it for her, if you need to see hijackthis log i can get it for you. she is even more computer illiterate than i am.