Comment 41 for bug 1338706

I should say that whenever upgrading firmware on a drive please make sure you have recent backups of your data, especially considering the nature of this issue.

It's very possible that the electron leakage in the NAND may have already corrupted your data, and the new firmware may not be able to restore the infrequently used/rewritten sectors *(not confirmed, but given my understanding of the problem this is a plausible explanation for some of the issues others are seeing). That being said the new firmware is supposed to help avoid this situation in the future, and as suck I whole-heartedly recommend the upgrade. Not only does it fix this issue, but performance is again restored.