On Mon, Jun 08, 2009 at 03:05:33PM +1200, Mark Davies wrote: > Dell Optiplex 745's 755's and 760's - approx 50% of the time "halt -p" > will successfully power off, the rest of the time hangs after "acpi0: > entering state 5" (these are all twin cpu machines). Please try http://www.netbsd.org/~joerg/cpu.c.diff Joerg