since i upgraded to 2.6.13...when I boot up, it spits out warnings about modules that can't be found and such. I'm not able to find anything of the sort in any log files, but its not cool...
did you upgrade to gcc 4.0.2-2? Its supposed to fix unknown symbols in the kernel.
edit: It will go on like that for at lest 5-10 minutes, but as far as I know it won't actually boot. I haven't waited around to see if it will actually boot. But I'll have screen upon screen of errors/warnings. It tells me that modules cannot be found (*.ko and such). I haven't actually tried downgrading to 2.12.*, so I guess i should try that first.