when unmounting an internal zip 250 drive on some occasions umount crashes or causes a kernel crash, which then, if I reboot the machine will not umount my filesystems. My machine is a Dell Precision 410 workstation PII 450/256megs RAM . I'm also experiencing the same problem but worse with an external Iomega Jazz drive using an aha1542 scsi card.
assigned to dledford
Probably fixed in 2.4/later. Retest against 7.3 and reopen if needed.