You will need to alter the tracker details (I had to on ALL of mine although some did carry on for a while as you found out).
There's a link to the thread from SirLamer about this on the index page for instructions.
It's basically to change the tracker to
www.mousebits.com:2710/<enter your own PID here - it'll be the same for all your stuff>/announce
Double click each torrent (that brings up the tracker details in uTorrent) and enter the above details (I amended what was there and then copied it then just highlighted it and pasted it into each one.
A bit time consuming but worked fine.
That will solve it for good
