12.10 users please check your syslog for ext4 errors
Have a request for 12.10 users... if you have been running 64bit Ubuntu 12.10 can you please go skim through your /var/log/syslog file and see if you have any suspicious looking ext4 write errors.
I have been having data corruption and sudden read-only filesystem problems as outlined in this bug report:
It seems this would be a huge bug if it were real and not just a handful of us having failing hardware issues.
Re: 12.10 users please check your syslog for ext4 errors
I see nothing related to your bug in the log on my clean installation of 12.10.