Waldorf had a hardware change a while back that I completely forgot to post about here. The new Logitech mouse that we got for it turned out to be a piece of junk -- which is surprising, as I've generally been happy with other Logitech mice. The cursor was very jumpy, which made it hard to point at anything with precision on screen. Tried more than one mouse, and all of them had the defect.

So, we quickly replaced it with a Microsoft Comfort Optical Mouse 3000, which seems to be working great. Goes to show that even companies with good histories can make mistakes!