Possible Duplicate:
How do I reset GNOME to the defaults?
Yesterday I had an issue with my 12.04 - https://askubuntu.com/questions/121957/12-04-does-anyone-know-how-to-fix-this-all-of-a-sudden-my-terminal-shortcut-d#comment145297_121957
and some configuration causing an issue with metacity making it crash - I was walked through the problem, and found out that by creating another user account and logging onto it - the problem wasn't present anymore on that account but still was present on my old account.
So my question is - was the problem just something in my old Home folder? - also - can most issues that occur like this be solved by making a new account and backing up the "Home" folder?