[mythtv] amd64 core 'missing' help??

[tommy]

I recently moved to an amd64 arch and am having some stability and 
volume problems that didn't seem to exist on my old athlonxp system. I'm 
attempting to look into the problems with gdb but cannot seem to 
generate a core file, I've looked at ulimit and the debugging info and 
it all looks ok to me:

mythtv at vector mythtv $ ulimit -c
unlimited
mythtv at vector mythtv $ file 
/gentoo/mythtv/mythtv.cvs/mythtv/programs/mythfrontend/mythfrontend
/gentoo/mythtv/mythtv.cvs/mythtv/programs/mythfrontend/mythfrontend: ELF 
64-bit LSB executable, AMD x86-64, version 1 (SYSV), for GNU/Linux 
2.4.0, dynamically linked (uses shared libs), not stripped
mythtv at vector mythtv $

so, mythtv is allowed to generate cores, the debugging info is in the 
executable, all I get is a line on the console that says 'Killed' 
whenever I extit watching a recording or live tv:

2004-12-29 15:18:31.074 Realtime priority would require SUID as root.
2004-12-29 15:18:31.101 Changing from None to WatchingLiveTV
Killed
mythtv at vector mythtv $

Anyone know what I'm missing? or have any brighter ideas than mine???

Also when trying to run it under gdb I get this response:

(gdb) run
Starting program: 
/gentoo/mythtv/mythtv.cvs/mythtv/programs/mythfrontend/mythfrontend
warning: Unable to find dynamic linker breakpoint function.
GDB will be unable to debug shared library initializers
and track explicitly loaded dynamic code.

Program received signal SIGSEGV, Segmentation fault.
0x000000000041d170 in _start ()
(gdb)

which is rather handy....

 Cheers.