I am getting strange problems with the fans..

This is whats in the system logs:

New Fri Sep 11 09:26:37 2009
2 FANCONTROL major failure One of the two fans has failed
New Fri Sep 11 09:16:53 2009
1 FANCONTROL running Both fans are running
New Fri Sep 11 08:52:46 2009
2 FANCONTROL major failure One of the two fans has failed
New Fri Sep 11 08:42:07 2009
1 FANCONTROL running Both fans are running
New Fri Sep 11 08:25:20 2009
2 FANCONTROL major failure One of the two fans has failed
New Fri Sep 11 08:14:48 2009
1 FANCONTROL running Both fans are running
New Fri Sep 11 07:59:42 2009
2 FANCONTROL major failure One of the two fans has failed
New Fri Sep 11 07:48:45 2009
1 FANCONTROL running Both fans are running
New Fri Sep 11 07:33:04 2009
2 FANCONTROL major failure One of the two fans has failed
New Fri Sep 11 07:21:38 2009
1 FANCONTROL running Both fans are running
New Fri Sep 11 07:06:42 2009
2 FANCONTROL major failure One of the two fans has failed
New Fri Sep 11 06:54:57 2009
1 FANCONTROL running Both fans are running
New Fri Sep 11 06:40:17 2009
2 FANCONTROL major failure One of the two fans has failed


Perhaps this is actually just reporting the fact that the second fan is simply auto matically switching on and off based on cooling needs?