orkut goes berserk

i received a video file in scrap book, after i clicked on it , it didn't run, now when i log on to orkut it goes to my home page but my browser turns to French language.I am unable to type replies and clicking sound keeps coming even without clicking ... help

How received video file ?
I think you are using Internet Explorer.
Try using Firefox .

And try to run a virus scan as well spybot scan..