If your just using the applications tab then thats your problem. I have had that issue before... you need to go into the process tab and end it there. If you already did that then its pretty jacked.
I would also recommend you go ahead and format to windows 7 (free until next march-june) because i used vista for over a year and am now using windows 7 and it is much better performance wise.
> Got my new laptop and its pretty sweet, getting used to vista and it seems OK,
> the only problem im having is sometimes firefox stops responding then it will
> not let me open it up again after I end it, i get a message saying firefox is
> already running, so i go to task manager and end the process and it will not end
> and i have to restart, any suggestions as to why its doing this or how I can end
> the bastard when it does it?