Hello, I have recently positivly identified b54a623efbcf5bff25c55117add1b4427b4e2f1b as causing a boot failure. Serial log is attached. The crash is completely deterministic, and is from an IBM xSeries 3530 M4 server. Given the crash and bad patch, I suspect it is more to do with the NUMA/memory layout than the specifics of the server. Dario: Being your patch, do you have any ideas? George: Regarding the release, if a fix cant easily be found, it might be worth considering reverting the change. ~Andrew