here are the bits of the log files after a reboot just now. I'm not sure they help much
bootlog
Oct 24 22:44:12 frontdoor cups: Starting cups:
Oct 24 22:44:13 frontdoor cupsd: cupsd: Child exited on signal 11!
Oct 24 22:44:13 frontdoor cups: cupsd: Child exited on signal 11!
Oct 24 22:44:13 frontdoor cups: cupsd startup failed
Oct 24 22:44:13 frontdoor cups:
Oct 24 22:44:13 frontdoor rc: Starting cups: failed
cups/error_log
I [24/Oct/2004:22:44:12 +0100] Listening to 7f000001:631
I [24/Oct/2004:22:44:12 +0100] Listening to c0a80001:631
I [24/Oct/2004:22:44:12 +0100] Loaded configuration file "/etc/cups/cupsd.conf"
I [24/Oct/2004:22:44:12 +0100] Configured for up to 100 clients.
I [24/Oct/2004:22:44:12 +0100] Allowing up to 100 client connections per host.
I [24/Oct/2004:22:44:12 +0100] Full reload is required.
I [24/Oct/2004:22:44:13 +0100] LoadPPDs: Read "/etc/cups/ppds.dat", 15 PPDs...
I [24/Oct/2004:22:44:13 +0100] LoadPPDs: No new or changed PPDs...
I [24/Oct/2004:22:44:13 +0100] Full reload complete.
any advice about where to look, or what to check next would be great.