I changed my username and lost all files....BUT
Here's the solution I found searching...
In the Finder, go to the /Users folder.
Locate the new home directory, which bears the users' short name.
Add "_new" to the new home directory's name.
Rename the old home directory to the user's correct short name.
Log out and back in with the affected user account.
But when I tried that, there was only one home directory instead of two...
Any help will be greatly appreciated.....
Mac OS X (10.5.1)