Comment 14 for bug 55104

Same thing happens to me on a HP Pavilion a1106n with i950G Intel Graphics and a nVidia GeForce 6200 PCI. I think the same thing happened when I tried a PCI voodoo3, too.

Also I know that this happens to someone with a HP Pavilion a1000n and a PCI NVidia Verto GeForce FX 5200 card. He also says this:

that its very presence causes kernel update to fail
and so many errors and utter failure
that I couldn't imagine it was ever a working system
it'd half update the kernel
like install it, but not update the version
or vice versa
it was awful, I wanted to give up on Linux forever
removing it from PC and disabling in Bios fixed everything, though

That's what pretty much happens to me.
I fixed it by blacklisting the intel_agp module. The darned thing took me 12 hours to fix.