It's also worth pointing out that (particularly after the Witty worm)
any computer user who doesn't have backups of their important data is an
IDIOT.
This applies to Linux users too. No OS is 100% secure or immune from
hardware failure.
Or immune to software bugs. RedHat 9's support for the Adaptect AIC-79xx series of SCSI adapters in particular. We were afraid we had lost our file servers (MD driven) RAID array after an accidental upgrade of the running Kernel on the server because it was spewing errors (and I mean hundreds, it couldn't mount the disks properly). But fortunately for us with a replacement of the SCSI driver for from the official Adaptec maintainer everything went back to normal.