I've finally got around to re-installing it, and so far, it looks as if the problem is gone now. But I haven't used Y!M all that much yet, so it's hard to say.
Thanks for the help anyway. And Laura, if you remember any names at all, let me know, because it sounds like it's the same problem. I'm convinced the stuff that did it is still on the computer. Ah well, as long as it's not bothering me, I'm fine with it.
Saskia
