Once I was unable to login to my profile at all. After going through the login screen my X stuck with just a background and mouse. Had to delete .gconf to have it fixed (after some Google-ing with the errors I got in the logs).
Later Ubuntu started crashing when I use Firefox and I had to delete .mozilla to have it fixed.
This is rather frustrating, when you want to rely on your system for work.
I also had similar problems.
Once I was unable to login to my profile at all. After going through the login screen my X stuck with just a background and mouse. Had to delete .gconf to have it fixed (after some Google-ing with the errors I got in the logs).
Later Ubuntu started crashing when I use Firefox and I had to delete .mozilla to have it fixed.
This is rather frustrating, when you want to rely on your system for work.