Comment 72 for bug 1449005

This question / problem does not really fit here, as it's, as you write yourself, totally unrelated to the TRIM issues mentioned above and this is bug report is a dublicate in any case.

That being said your logs don't look too promising and I'd assume an SSD failure. One of the first things I'd try in this case is having a closer look at the S.M.A.R.T. stats (smartctl --xall /dev/sdX | less) and running the different S.M.A.R.T. self tests (man smartctl). This should give you more information about how your SSD feels and might help to rule out any software issues immediately.

In any case, you should not discuss the results here but on an appropriate mailing list or help forum, which bugs.launchpad.net isn't. (You can also contact me directly via mail, however while I've some experience using Linux systems, also with SSDs, I'm no ATA / libata expert.)

Good luck!