Okay, I'm a bit of a Linux newbie, but I've installed and used different distros before and never had this problem, so I'm guessing it's not something that's only happened to me. Yesterday I installed Kubuntu (Breezy) and everything went fine. The first time booting after installation all my partitions, CD/DVD drives and floppies appeared in media:/ in Konqueror and I could go from there into my Windows partition with no hassle and read whatever files I wanted to.

Today (the next boot) all but my floppy drive and CD drive have disappeared from media:/ in Konqueror. I can still go into the mounted directory directly (/media/hda1), so it's still being mounted, but it is a bit more convinient when the partition is easily available inside media:/. Anyway, not a huge problem, so I thought I'd listen to some music (located on my Windows partition). I went through the mounted directory in Konqueror to a folder with about 1200 MP3s in it. I'd used Konqueror to open this directory and play music yesterday without a hitch, but today, as soon as I opened the directory (not a song in the directory, just entered the directory itself) the mouse started jerking whenever it was moved. I opened a song in XMMS and surely enough, every second or so the visualization also froze for about a third of a second.

I thought maybe something was up with Konqueror (even though this problem hadn't shown up yesterday in the same directory) so I closed Konqueror. No luck. The mouse, and just about everything else that moves hangs about every second for about a third of a second. Very annoying - and the only way I've found to make the jerking stop is to reboot. What's going on?

Nobody's ever had this problem before?

EDIT: Unmounting the Windows partition also seems to stop the jerking, but of course, then I can't use any of the files on it.