Comment 9 for bug 446891

Count me in on this one. Went to create an ubuntu remix on my sony usb stick. Program appeared to hang badly after clicking format.
End result, sony usb drive was completely formated (both partitions) + my WDD USB 320gig drive was wiped and converted to a fat32 drive, wiping out 310 gigs of video files. (I did NOT select this drive for the operation.)

Yep. If teskdisk doesn't work, you can call me less than thrilled here.