I have the same issue running DELL Latitude D430 with Intel Mobile 945GM/GMS/GME, 943/940GML Express Integrated Graphics Controller.
I can confirm, that SNA workaround fixes the issue.
$ cat /etc/X11/xorg.conf Section "Device" Identifier "Card0" Driver "intel" Option "AccelMethod" "sna" EndSection
I have the same issue running DELL Latitude D430 with Intel Mobile 945GM/GMS/GME, 943/940GML Express Integrated Graphics Controller.
I can confirm, that SNA workaround fixes the issue.
$ cat /etc/X11/xorg.conf
Section "Device"
Identifier "Card0"
Driver "intel"
Option "AccelMethod" "sna"
EndSection