Did a 'unity --reset' because when I logged on, I just got a blank screen with a mouse cursor.

This is using nouveau on fully updated Precise.

Below find the console output in case it helps.

alex-mayorga@VPCCW1FFXL:~$ unity --reset
unity-panel-service: no process found
Checking if settings need to be migrated ...no
Checking if internal files need to be migrated ...no
Backend     : gconf
Integration : true
Profile     : unity
Adding plugins
Initializing core options...done
Initializing composite options...done
Initializing opengl options...done
Initializing decor options...done
Initializing vpswitch options...done
Initializing snap options...done
Initializing mousepoll options...done
Initializing resize options...done
Initializing place options...done
Initializing move options...done
Initializing wall options...done
Initializing grid options...done
Initializing session options...done
Initializing gnomecompat options...done
Initializing animation options...done
Initializing fade options...done
Initializing unitymtgrabhandles options...done
Initializing workarounds options...done
Initializing scale options...done
compiz (expo) - Warn: failed to bind image to texture
Initializing expo options...done
Initializing ezoom options...done
compiz (core) - Warn: failed to receive ConfigureNotify event on 0x1c00004

compiz (core) - Warn: failed to receive ConfigureNotify event on 0x1c002fa

compiz (core) - Warn: failed to receive ConfigureNotify event on 0x3600911

ERROR 2012-03-26 22:28:47 unity.bghash BGHash.cpp:538 could not open file (/home/alex-mayorga/.cache/unity/bgcachefile): Failed to open file '/home/alex-mayorga/.cache/unity/bgcachefile': No such file or directory

Screen geometry changed:
   0x0x1366x768

Initializing unityshell options...done
compiz (core) - Warn: unhandled ConfigureNotify on 0x3a000a0!
compiz (core) - Warn: this should never happen. you should probably file a bug about this.
compiz (core) - Warn: unhandled ConfigureNotify on 0x3a000a3!
compiz (core) - Warn: this should never happen. you should probably file a bug about this.
compiz (core) - Warn: unhandled ConfigureNotify on 0x3a000a6!
compiz (core) - Warn: this should never happen. you should probably file a bug about this.
WARN  2012-03-26 22:28:48 unity.libindicator <unknown>:0 Desktop file '/usr/share/applications/firefox-trunk.desktop' is using a depracted format for it's actions that will be dropped soon.
WARN  2012-03-26 22:28:48 unity.libindicator <unknown>:0 Desktop file '/usr/share/applications/gnome-terminal.desktop' is using a depracted format for it's actions that will be dropped soon.
Initializing annotate options...done
Initializing blur options...done
Initializing clone options...done
Initializing colorfilter options...done
Initializing commands options...done
Initializing cube options...done
Initializing imgjpeg options...done
Initializing kdecompat options...done
Initializing mag options...done
Initializing neg options...done
Initializing obs options...done
Initializing opacify options...done
Initializing put options...done
Initializing resizeinfo options...done
Initializing ring options...done
Initializing rotate options...done
Initializing scaleaddon options...done
Initializing screenshot options...done
Initializing shift options...done
Initializing staticswitcher options...done
Initializing switcher options...done
Initializing thumbnail options...done
Initializing water options...done
Initializing winrules options...done
Initializing wobbly options...done
Setting Update "main_menu_key"
Setting Update "run_key"
Setting Update "run_command_terminal_key"
Setting Update "maximize_window_key"
Setting Update "minimize_window_key"
Setting Update "toggle_window_maximized_key"
Setting Update "run_command_terminal_key"

(compiz:3461): GLib-CRITICAL **: g_source_remove: assertion `tag > 0' failed

(compiz:3461): GLib-CRITICAL **: g_source_remove: assertion `tag > 0' failed

(compiz:3461): GLib-CRITICAL **: g_source_remove: assertion `tag > 0' failed
Segmentation fault (core dumped)