logon profile not working

If you experience these windows vista errors:

Windows cannot log you on because your profile cannot be loaded. Check that you are connected to the network, and that your network is functioning correctly.
Windows cannot load the user's profile but has logged you on with the default profile for the system.
Windows cannot load the locally stored profile. Possible causes of this error include insufficient security rights or a corrupt local profile.
The winlogon notification subscriber failed a notification event.
The winlogon notification subscriber failed a critical notification event.
The content source cannot be accessed.
The winlogon notification subscriber failed a notification event.

Solution to fix your user profile
http://www.vistax64.com/tutorials/130095-user-profile-service-failed-logon-user-profile-cannot-loaded.html

Regards