Daniel,
I have an nForce board and it seems a bit unstable. It was REALLY bad at first, but I turned in the memory for new and now it only locks up occasionally, but I have not found any tips on making it work with Debian and the 2.6 kernel. Where did you find your pointers, and how well is it working now?
--JATF
The issue is that there a race condition in the C1 disconnect. nVidia released the necessary information to the mobo manufacturers over a year ago, but only one bothered to release a BIOS update with the fix. Just before 2.6.6 came out, an nVidia developer posted to LKML with the information so that the kernel devs can work around the problem.
Short version: the problem is now fixed in 2.6.6.
If you choose not to upgrade, pass "noapic nolapic" on your kernel command line. You loos some performance, but your machine will be stable.
-Roberto Sanchez
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