I also suffer from this same bug using the "intel" xorg driver (package "xserver-xorg-video-intel-2.4" version "2:2.4.1-1ubuntu11~ppa1", because the default intel driver in jaunty is fubar) on the "Intel Corporation Mobile 945GM/GMS, 943/940GML Express Integrated Graphics Controller (rev 03)" on my laptop.
I also suffer from this same bug using the "intel" xorg driver (package "xserver- xorg-video- intel-2. 4" version "2:2.4. 1-1ubuntu11~ ppa1", because the default intel driver in jaunty is fubar) on the "Intel Corporation Mobile 945GM/GMS, 943/940GML Express Integrated Graphics Controller (rev 03)" on my laptop.