I'd like to confirm what Eemil Lagerspetz says above in https://bugs.launchpad.net/ubuntu/+source/firefox/+bug/38131/comments/19. My Dell Inspiron 640m laptop (945GM) exhibits this problem running Hardy with the default xorg configuration having AccelMethod = exa. However the problem disappears by setting AccelMethod = XAA and RenderAccel = true. I'm probably losing some graphics performance with this but it's certainly worth avoiding this bug which otherwise incapacitates my machine.
I'd like to confirm what Eemil Lagerspetz says above in https:/ /bugs.launchpad .net/ubuntu/ +source/ firefox/ +bug/38131/ comments/ 19. My Dell Inspiron 640m laptop (945GM) exhibits this problem running Hardy with the default xorg configuration having AccelMethod = exa. However the problem disappears by setting AccelMethod = XAA and RenderAccel = true. I'm probably losing some graphics performance with this but it's certainly worth avoiding this bug which otherwise incapacitates my machine.