I also have another problem which I have not had before.. Multiple channels - BBC News, and a load of Sky Vegas channels.
I think I'll have to turn off the channel updating bit for now, because my channel lists are now a bit of a mess!
What skin do you use by the way?
Thats also strange. Have you tried clearing the channel list old completely and scan to a clean list?. Could well be something to do with you sql mate as all your channels and series link stuff are stored in there