desktop resetted for some reason

[lifeisgood360]

hi. i've had a mac for over a year and something really messed up just happened.. i just turned on my computer and my desktop was resetted.. and i can't find any of the folders in the desktop and my dock has been resetted and my browser bookmarks are gone and all of the other program settings have been gone.. any ideas how to fix this? thanks

*edit*
this is what popped up on console:
** (process:227): CRITICAL **: msn_object_new_from_string: assertion `!strncmp(str, "<msnobj ", 8)' failed

** (process:227): CRITICAL **: msn_object_new_from_string: assertion `!strncmp(str, "<msnobj ", 8)' failed

** (process:227): CRITICAL **: msn_object_new_from_string: assertion `!strncmp(str, "<msnobj ", 8)' failed
2006-12-20 12:36:42.857 System Preferences[296] FSFindFolder failed with:-35
2006-12-20 12:36:45.872 System Preferences[296] FSFindFolder failed with:-35
2006-12-20 12:36:46.278 System Preferences[296] FSFindFolder failed with:-35
2006-12-20 12:36:46.307 System Preferences[296] SKIndexCreateWithURL failed for path /Users/Dann/com.apple.preferencepanes.searchindexcache
2006-12-20 12:38:12.470 Camino[266] writePropertyList: Failed to write file /Users/Dann/Library/Application Support/Camino/bookmarks.plist
Dec 20 12:38:15 *******-ibook-g4 loginwindow[95]: sendQuitEventToApp (iTunes Helper): AESendMessage returned error -609

 

[iMeowbot]

That usually means that you (possibly accidentally) renamed your home folder. If that's what happened, it should be fairly easy to fix.

More at Apple.