What the? My floppy is nuts!

Does anyone know what would be a likely cause of my floppy drive going into seek mode (at seemingly random times)? The floppy has been changed with no effect, it still tries to read for no reason once in a while. I suspect the controller on the motherboard is getting ready to die, but I'm hoping that there's a software reason behind it.

I'm running a Win98SE system if that helps. Any suggestions (other than to upgrade my 98  :P )?