Hi Martin, thanks for the backtrace. [..snip..] > Process XXXXX (pid: -2011230548, stackpage=8a4c4000) This looks very weird...next thing to do would be to spot the place in xdm where it crashes the kernel(I already know it's before it forks the X server) shall we take this off list, it's only marginally XFree86 related? Regards, -- Guido