(gdb) backtrace
#0  0xeeacfcf3 in AssertMsgImplementation ()
   from /home/at46/.steam/ubuntu12_32/libtier0_s.so
#1  0xe9d5ebf0 in ?? () from /home/at46/.steam/ubuntu12_32/steamclient.so
#2  0xe9d839b2 in ?? () from /home/at46/.steam/ubuntu12_32/steamclient.so
#3  0xe9d65ddc in ?? () from /home/at46/.steam/ubuntu12_32/steamclient.so
#4  0xe9d65f65 in ?? () from /home/at46/.steam/ubuntu12_32/steamclient.so
#5  0xea385dc7 in ?? () from /home/at46/.steam/ubuntu12_32/steamclient.so
#6  0xeea79410 in ?? () from /home/at46/.steam/ubuntu12_32/libvstdlib_s.so
#7  0xeea7a44e in ?? () from /home/at46/.steam/ubuntu12_32/libvstdlib_s.so
#8  0xeea7a58f in Coroutine_Continue ()
   from /home/at46/.steam/ubuntu12_32/libvstdlib_s.so
#9  0xea3862d2 in ?? () from /home/at46/.steam/ubuntu12_32/steamclient.so
#10 0xea38da26 in ?? () from /home/at46/.steam/ubuntu12_32/steamclient.so
#11 0xea38e9fc in ?? () from /home/at46/.steam/ubuntu12_32/steamclient.so
#12 0xea38a868 in ?? () from /home/at46/.steam/ubuntu12_32/steamclient.so
#13 0xea35fe06 in ?? () from /home/at46/.steam/ubuntu12_32/steamclient.so
#14 0xe99ee0d9 in ?? () from /home/at46/.steam/ubuntu12_32/steamclient.so
#15 0xe9faca51 in ?? () from /home/at46/.steam/ubuntu12_32/steamclient.so
#16 0xe99f0429 in ?? () from /home/at46/.steam/ubuntu12_32/steamclient.so
#17 0xe99f1386 in ?? () from /home/at46/.steam/ubuntu12_32/steamclient.so
#18 0xeead6e30 in SteamThreadTools::CThread::ThreadExceptionWrapper(void*) ()
   from /home/at46/.steam/ubuntu12_32/libtier0_s.so
#19 0xeead521b in ?? () from /home/at46/.steam/ubuntu12_32/libtier0_s.so
---Type <return> to continue, or q <return> to quit---
#20 0xeead54ef in CatchAndWriteMiniDumpExForVoidPtrFn ()
   from /home/at46/.steam/ubuntu12_32/libtier0_s.so
#21 0xeead5541 in CatchAndWriteMiniDumpForVoidPtrFn ()
   from /home/at46/.steam/ubuntu12_32/libtier0_s.so
#22 0xeead9ac1 in SteamThreadTools::CThread::ThreadProc(void*) ()
   from /home/at46/.steam/ubuntu12_32/libtier0_s.so
#23 0xf7c8a2d5 in start_thread () from /lib/i386-linux-gnu/libpthread.so.0
#24 0xf7bb347e in clone () from /lib/i386-linux-gnu/libc.so.6