Attempted to patch kernel and ran into same issue as http://bugs.debian.org/cgi-bin/bugreport.cgi?bug=614010
Bug has been closed as fixed but still: dpkg: warning: obsolete option '--print-installation-architecture', please use '--print-architecture' instead. START applying xenomai patch (Xenomai realtime kernel patches) Testing whether "Xenomai realtime kernel patches" patch for 2.6.32 applies (dry run): 1 out of 10 hunks FAILED -- saving rejects to file arch/x86/kernel/apic/apic.c.rej "Xenomai realtime kernel patches" patch for 2.6.32 does not apply cleanly Fresh copy of debian stable: Linux 2.6.32-5-686 i686 linux-patch-xenomai/squeeze uptodate 2.5.4-3squeeze1