I did a quick search of the ubuntu-users mailing list and it looks like the
latest versions of the nvidia drivers have issues with monitor auto
detection. Are you running on nVidia display adapter?

This seems to cover the resolutions to various nVidia problems:
https://help.ubuntu.com/community/BinaryDriverHowto/Nvidia

-- 
Andrew S. Zbikowski | http://andy.zibnet.us
IT Outhouse Blog Thing | http://www.itouthouse.com
-------------- next part --------------
An HTML attachment was scrubbed...
URL: http://mailman.mn-linux.org/pipermail/tclug-list/attachments/20080916/fe00437d/attachment.htm