After the latest TF2's update (ca. Feb 7 2014):

1. in main window click "Play Multiplayer"
2. click "Show Servers" (all server filters options default)
3. a pop-up with progressbar of found servers appears
4. when progressbar finishes, the game segfaults.
   However, "Play Now" button works Ok.

System info: https://gist.github.com/CrankyCrackpot/8027209

Terminal output.

Game.so loaded for "Team Fortress"
Uploading dump (out-of-process) [proxy '']
/tmp/dumps/crash_20140208204030_1.dmp
/mnt/1Tb/alex/steam/SteamApps/common/Team Fortress 2/hl2.sh: line 67: 19250 Segmentation fault      ${GAME_DEBUGGER} "${GAMEROOT}"/${GAMEEXE} "$@"
Game removed: AppID 440 "Team Fortress 2", ProcID 19250 
Focused window is now 1, 0
OnFocusWindowChanged to window type: k_EWindowTypeSteamDesktop, 0
Generating new string page texture 106: 24x256, total string texture memory is 2.16 MB
Finished uploading minidump (out-of-process): success = yes
response: CrashID=bp-08ddff49-edf0-4573-befc-a17142140208
unlinked 2 orphaned pipes

GDB trace:

Program received signal SIGSEGV, Segmentation fault.
0xe7557e1c in ?? () from /mnt/1Tb/alex/steam/SteamApps/common/Team Fortress 2/tf/bin/client.so
(gdb) bt
#0  0xe7557e1c in ?? () from /mnt/1Tb/alex/steam/SteamApps/common/Team Fortress 2/tf/bin/client.so
#1  0xe75628a1 in ?? () from /mnt/1Tb/alex/steam/SteamApps/common/Team Fortress 2/tf/bin/client.so
#2  0xe7563588 in ?? () from /mnt/1Tb/alex/steam/SteamApps/common/Team Fortress 2/tf/bin/client.so
#3  0xe78a8a82 in ?? () from /mnt/1Tb/alex/steam/SteamApps/common/Team Fortress 2/tf/bin/client.so
#4  0xf7b16e4a in ?? () from /mnt/1Tb/alex/steam/SteamApps/common/Team Fortress 2/bin/libvstdlib.so
#5  0xf7b175cf in ?? () from /mnt/1Tb/alex/steam/SteamApps/common/Team Fortress 2/bin/libvstdlib.so
#6  0xf7b178f0 in Coroutine_Continue ()
   from /mnt/1Tb/alex/steam/SteamApps/common/Team Fortress 2/bin/libvstdlib.so
#7  0xe78a91c3 in ?? () from /mnt/1Tb/alex/steam/SteamApps/common/Team Fortress 2/tf/bin/client.so
#8  0xe78acf54 in ?? () from /mnt/1Tb/alex/steam/SteamApps/common/Team Fortress 2/tf/bin/client.so
#9  0xe78aea61 in ?? () from /mnt/1Tb/alex/steam/SteamApps/common/Team Fortress 2/tf/bin/client.so
[#10](/issue/ValveSoftware/steam-for-linux/10) 0xe789b743 in ?? () from /mnt/1Tb/alex/steam/SteamApps/common/Team Fortress 2/tf/bin/client.so
[#11](/issue/ValveSoftware/steam-for-linux/11) 0xf7f8d083 in ?? () from /mnt/1Tb/alex/steam/SteamApps/common/Team Fortress 2/bin/libsteam_api.so
[#12](/issue/ValveSoftware/steam-for-linux/12) 0xf7f8d27d in ?? () from /mnt/1Tb/alex/steam/SteamApps/common/Team Fortress 2/bin/libsteam_api.so
[#13](/issue/ValveSoftware/steam-for-linux/13) 0xf7f8d738 in ?? () from /mnt/1Tb/alex/steam/SteamApps/common/Team Fortress 2/bin/libsteam_api.so
[#14](/issue/ValveSoftware/steam-for-linux/14) 0xf7f8e602 in SteamAPI_RunCallbacks ()
   from /mnt/1Tb/alex/steam/SteamApps/common/Team Fortress 2/bin/libsteam_api.so
[#15](/issue/ValveSoftware/steam-for-linux/15) 0xf284ecc4 in ?? () from /mnt/1Tb/alex/steam/SteamApps/common/Team Fortress 2/bin/engine.so
[#16](/issue/ValveSoftware/steam-for-linux/16) 0xf28fea02 in ?? () from /mnt/1Tb/alex/steam/SteamApps/common/Team Fortress 2/bin/engine.so
[#17](/issue/ValveSoftware/steam-for-linux/17) 0xf290044e in ?? () from /mnt/1Tb/alex/steam/SteamApps/common/Team Fortress 2/bin/engine.so
[#18](/issue/ValveSoftware/steam-for-linux/18) 0xf2901d98 in ?? () from /mnt/1Tb/alex/steam/SteamApps/common/Team Fortress 2/bin/engine.so
[#19](/issue/ValveSoftware/steam-for-linux/19) 0xf2919c21 in ?? () from /mnt/1Tb/alex/steam/SteamApps/common/Team Fortress 2/bin/engine.so
[#20](/issue/ValveSoftware/steam-for-linux/20) 0xf2919e6e in ?? () from /mnt/1Tb/alex/steam/SteamApps/common/Team Fortress 2/bin/engine.so
[#21](/issue/ValveSoftware/steam-for-linux/21) 0xf2919f79 in ?? () from /mnt/1Tb/alex/steam/SteamApps/common/Team Fortress 2/bin/engine.so
[#22](/issue/ValveSoftware/steam-for-linux/22) 0xf29fdef2 in ?? () from /mnt/1Tb/alex/steam/SteamApps/common/Team Fortress 2/bin/engine.so
[#23](/issue/ValveSoftware/steam-for-linux/23) 0xf29fad3f in ?? () from /mnt/1Tb/alex/steam/SteamApps/common/Team Fortress 2/bin/engine.so
[#24](/issue/ValveSoftware/steam-for-linux/24) 0xf29fae4d in ?? () from /mnt/1Tb/alex/steam/SteamApps/common/Team Fortress 2/bin/engine.so
[#25](/issue/ValveSoftware/steam-for-linux/25) 0xf2a4fc70 in ?? () from /mnt/1Tb/alex/steam/SteamApps/common/Team Fortress 2/bin/engine.so
[#26](/issue/ValveSoftware/steam-for-linux/26) 0xf29fbe9f in ?? () from /mnt/1Tb/alex/steam/SteamApps/common/Team Fortress 2/bin/engine.so
[#27](/issue/ValveSoftware/steam-for-linux/27) 0xf7c48b20 in ?? () from bin/launcher.so
[#28](/issue/ValveSoftware/steam-for-linux/28) 0xf7c48b20 in ?? () from bin/launcher.so
[#29](/issue/ValveSoftware/steam-for-linux/29) 0xf7c30d3d in LauncherMain () from bin/launcher.so
[#30](/issue/ValveSoftware/steam-for-linux/30) 0x08048504 in main ()
(gdb) kill