When I try and mount a CD or Removeable Disk, I'm getting a system crash. This only seems to occur after having the computer turned on for a while and completing various activities. If I try to reboot with the CD or Disk still in, the system will crash again when it tries to mount the disk. However, if I remove the disk and reboot, everything comes up fine. I'm running a Performa 6400 upgraded to a G3/300. Any help or suggestions from anyone would be appreciated.