Thanks, yes. I guessed the problem was the data counter widget - I'll have to remove that till it's updated, I suppose. (Grr)

I have just rebooted but not yet had a chance to try the beast since. It was certainly slow when it was first installed, even with things like the calendar widget. (Life is complex - got a long work phone call in the middle of restoring, so still pushing a bit more go-juice in before I head into work.)

Is there anything else I ought to check for? I have tried running a few random music and video files, and don't seem to have any problems there. What else might have gone haywire?