(gdb) bt
#0  0x08073020 in RingBuffer::isDVD (this=0x0) at RingBuffer.h:88
#1  0xb7af80c9 in TV::ProcessKeypress (this=0xa5e6c660, e=0xa5e4a488) at tv_play.cpp:2589
#2  0xb7b02857 in TV::RunTV (this=0xa5e6c660) at tv_play.cpp:1796
#3  0xb7b0410d in TV::EventThread (param=0xa5e6c660) at tv_play.cpp:1691
#4  0xb6015eb7 in start_thread () from /lib/tls/i686/cmov/libpthread.so.0
#5  0xb5e919be in clone () from /lib/tls/i686/cmov/libc.so.6
(gdb)