You're welcome and good to hear that's fixed!
The method to my madness was first to notice the error message mentioned
Liberation sans bold which I knew to be a font. Then I searched my disk for
Liberation to find the corresponding file and then I searched the packages to
see which one this file came out from.
Don't know too much about SSDs but at least on a HDD if you've got large
files you've bittorrented home, check their integrity. If you notice that
many files are 99% percent intact, that could be an indicator of disk
problems. (small scattered errors creeping up, bittorrent will notice that
nicely) Besides that check the SMART parameters but only trust those if they
say you do have a problem...
I never heard of somebody regretting they made backups! I had a disk die on
me, it was painful and I don't recommend the experience to anybody.