This looks like http://bugs.debian.org/cgi- bin/bugreport.cgi?bug=342105;msg=35
Some people has workaround the issue by using "exa", but this does not work for my HP nw8240 with FireGL V5000 (x700) as it makes whole Xorg slow (moving windows...) with "ati" driver. -- [Dapper] Firefox causes massive Xorg CPU usage https://launchpad.net/bugs/38131 -- ubuntu-bugs mailing list ubuntu-bugs@lists.ubuntu.com https://lists.ubuntu.com/mailman/listinfo/ubuntu-bugs