I have the same problem with the nvidia-glx driver.
Occours in Mozilla-firefox and Mozilla-thunderbird apps.
I'm using a nVidia GeForce 7300 GS, but I had installed before an ATI vga card.
I have the same problem with the nvidia-glx driver.
Occours in Mozilla-firefox and Mozilla-thunderbird apps.
I'm using a nVidia GeForce 7300 GS, but I had installed before an ATI vga card.