i had a similiar situation. I logged in as usual, and found my Icons all over the place, and clearly, there were other things that were "off". I was really shocked, and had no idea what was going on, or what to do. I dont know why, but i went into internet options, and there where you have your "homepage" , (mine being Yahoo)I find the homepage was changed to something called "tatootaddle" . I'm petrified at this point, goodness, whats going on??? . the only thing i knew to do was go to system restore, and i went back a day, and all was fine. In the meantime, i checked for viruses etc, and found nothing. When we have bad weather here, i always sign off, and in some cases unplug. and if i unplug, i am sure the pc is all the way off. and then some. but i honestly cant remember if i had to do this. i only know i was horrified, and i'm glad things are back to normal. I consider myself a total newbie even after 6-7 yrs with a pc. boohoo on me. does anyone have any ideas what could have caused this?? dont get too technical please