Just to rule out this possibility - can those of you experiencing this problem please attach your xorg.conf file and indicate the graphic card model and monitor model you're using?
We've had reports that for some people, upgrading to Feisty results in generic monitor settings getting put into xorg.conf (see bug 3731 for example). Probably that isn't the case here, but it would be worthwhile to rule it out.
Just to rule out this possibility - can those of you experiencing this problem please attach your xorg.conf file and indicate the graphic card model and monitor model you're using?
We've had reports that for some people, upgrading to Feisty results in generic monitor settings getting put into xorg.conf (see bug 3731 for example). Probably that isn't the case here, but it would be worthwhile to rule it out.