I have updated the agp(4) device code a few hours ago, and there are reports of kernel panics on some hardware.
So far, it seems to be mostly a problem with Pentium-M and Pentium-4 era Intel integrated chipsets such as 915GM. It will take some time to figure out the issue; you may want to avoid unnecessary updates if you think you have the wrong hardware. -- Francois Tigeot
