The error above showed up in my log whenever I tried to start the X server after upgrading to xorg-x11-drv-vesa-2.0.0-1.fc10.i386.rpm. Downgrading to 1.3.0-14.20080404.fc9.i386 solved the problem. I have almost all other packages current from Rawhide. If you Google for that error you will see that the Ubuntu folks encountered it at well, although I didn't dig deeply enough to understand exactly how they addressed it.
Ubuntu bug is https://bugs.launchpad.net/debian/+source/xserver-xorg-video-vesa/+bug/246585 Developers there claim that ajax's patch in XServer, fixes this. Wondering whether plain yum upgrade xorg* wouldn't save you. However, it seems to be known even with openchrome as well (I had to to Google Cache for it, the wiki itself seems to be down) http://wiki.openchrome.org/tikiwiki/tiki-view_forum_thread.php?comments_parentId=5334&topics_threshold=0&topics_offset=21&topics_sort_mode=hits_desc&topics_find=&forumId=1 Where on the other hand author claims vesa driver to work well. So, could you please upgrade once more and take a look whether it hasn't been fixed in meantime?
Reporter, could you please reply to the previous question? If you won't reply in one month, I will have to close this bug as INSUFFICIENT_DATA. Thank you.
Since there are insufficient details provided in this report for us to investigate the issue further, and we have not received feedback to the information we have requested above, we will assume the problem was not reproducible, or has been fixed in one of the updates we have released for the reporter's distribution. Users who have experienced this problem are encouraged to upgrade to the latest update of their distribution, and if this issue turns out to still be reproducible in the latest update, please reopen this bug with additional information. Closing as INSUFFICIENT_DATA.