I have noticed that if I have a CD in the player, it often starts to spin on its own when LW is running. My guess is that it has to do with the way in which LW interacts with the finder. When the finder updates the desktop it routinely scans all volumes, including the CD. I would imagine the glitch is somewhere in this process.

I should also add that it makes me VERY nervous having a Java app. have this much control over the finder...