Look, if no-one else has had it, and it's happening randomly, you're going to have to come to terms with the possibility that it's not your firmware.

Consider these options for starters:
- NAND errors (Not really fixable)
- File system corruptions (Fixable on the MS, more difficult on the NAND)
- Damaged memory (Not really fixable)
- Power supply faults (Not really fixable)
- iDstorage misconfiguration (Fixable in some situations)
- Flash1 [registry] corruption/incompatability (Fixable with flash1 format)

If it's not one of those or something similar, perhaps you're just doing something completely wrong, or there's some other software problem.