I've seen that with a drivers for a few devices... mostly scanners. For the scanner I was using, the "driver" was only there to launch an app when you pushed the scan button. It was pretty worthless, since I always scan through Photoshop's TWAIN menu anyway.
It's not an error, but it is annoying when your log is continually growing and your powerbook disk won't spin down. When you figure out what is causing it, fire an email off to the manufacturer telling them to fix it.