Console output from running steam:
Running Steam on ubuntu 13.10 64-bit STEAM_RUNTIME is enabled automatically Installing breakpad exception handler for appid(steam)/version(1382035714_client) Installing breakpad exception handler for appid(steam)/version(1382035714_client) unlinked 0 orphaned pipes Gtk-Message: Failed to load module "overlay-scrollbar" Gtk-Message: Failed to load module "unity-gtk-module" (steam:1082): Gtk-WARNING **: Unable to locate theme engine in module_path: "murrine", (steam:1082): Gtk-WARNING **: Unable to locate theme engine in module_path: "murrine", (steam:1082): Gtk-WARNING **: Unable to locate theme engine in module_path: "murrine", (steam:1082): Gtk-WARNING **: Unable to locate theme engine in module_path: "murrine", (steam:1082): Gtk-WARNING **: Unable to locate theme engine in module_path: "murrine", (steam:1082): Gtk-WARNING **: Unable to locate theme engine in module_path: "murrine", (steam:1082): Gtk-WARNING **: Unable to locate theme engine in module_path: "murrine", (steam:1082): Gtk-WARNING **: Unable to locate theme engine in module_path: "murrine", (steam:1082): Gtk-WARNING **: Unable to locate theme engine in module_path: "murrine", (steam:1082): Gtk-WARNING **: Unable to locate theme engine in module_path: "murrine", (steam:1082): Gtk-WARNING **: Unable to locate theme engine in module_path: "murrine", (steam:1082): Gtk-WARNING **: Unable to locate theme engine in module_path: "murrine", (steam:1082): Gtk-WARNING **: Unable to locate theme engine in module_path: "murrine", (steam:1082): Gtk-WARNING **: Unable to locate theme engine in module_path: "murrine", (steam:1082): Gtk-WARNING **: Unable to locate theme engine in module_path: "murrine", (steam:1082): Gtk-WARNING **: Unable to locate theme engine in module_path: "murrine", (steam:1082): Gtk-WARNING **: Unable to locate theme engine in module_path: "murrine", (steam:1082): Gtk-WARNING **: Unable to locate theme engine in module_path: "murrine", (steam:1082): Gtk-WARNING **: Unable to locate theme engine in module_path: "murrine", (steam:1082): Gtk-WARNING **: Unable to locate theme engine in module_path: "murrine", (steam:1082): Gtk-WARNING **: Unable to locate theme engine in module_path: "murrine", (steam:1082): Gtk-WARNING **: Unable to locate theme engine in module_path: "murrine", (steam:1082): Gtk-WARNING **: Unable to locate theme engine in module_path: "murrine", (steam:1082): Gtk-WARNING **: Unable to locate theme engine in module_path: "murrine", (steam:1082): Gtk-WARNING **: Unable to locate theme engine in module_path: "murrine", (steam:1082): Gtk-WARNING **: Unable to locate theme engine in module_path: "murrine", (steam:1082): Gtk-WARNING **: Unable to locate theme engine in module_path: "murrine", (steam:1082): Gtk-WARNING **: Unable to locate theme engine in module_path: "murrine", (steam:1082): Gtk-WARNING **: Unable to locate theme engine in module_path: "murrine", (steam:1082): Gtk-WARNING **: Unable to locate theme engine in module_path: "murrine", (steam:1082): Gtk-WARNING **: Unable to locate theme engine in module_path: "murrine", (steam:1082): Gtk-WARNING **: Unable to locate theme engine in module_path: "murrine", (steam:1082): Gtk-WARNING **: Unable to locate theme engine in module_path: "murrine", Gtk-Message: Failed to load module "canberra-gtk-module" Installing breakpad exception handler for appid(steam)/version(1382035714_client) [1020/170835:WARNING:proxy_service.cc(958)] PAC support disabled because there is no system implementation /home/buildbot/buildslave_steam/steam_rel_client_ubuntu12_linux/build/src/steamUI/../common/steam/client_api.cpp (296) : Assertion Failed: ClientAPI_InitGlobalInstance: InternalAPI_Init_Internal failed, most likely because you are missing a 32-bit dependency of steamclient.so (the Steam client is a 32-bit app). Assert( Assertion Failed: ClientAPI_InitGlobalInstance: InternalAPI_Init_Internal failed, most likely because you are missing a 32-bit dependency of steamclient.so (the Steam client is a 32-bit app). ):/home/buildbot/buildslave_steam/steam_rel_client_ubuntu12_linux/build/src/steamUI/../common/steam/client_api.cpp:296 Installing breakpad exception handler for appid(steam)/version(1382035714_client) Uploading dump (out-of-process) [proxy ''] /tmp/dumps/assert_20131020170835_5.dmp /home/buildbot/buildslave_steam/steam_rel_client_ubuntu12_linux/build/src/steamUI/SteamStartup.cpp (685) : Assertion Failed: ! "There was a problem with your Steam installation.\n" "Please reinstall steam.\n" unlinked 2 orphaned pipes CAsyncIOManager: 0 threads terminating. 0 reads, 0 writes, 0 deferrals. CAsyncIOManager: 57 single object sleeps, 0 multi object sleeps CAsyncIOManager: 0 single object alertable sleeps, 1 multi object alertable sleeps [2013-10-20 17:08:35] Startup - updater built Oct 17 2013 10:40:21 [2013-10-20 17:08:35] Opted in to client beta 'publicbeta' via beta file [2013-10-20 17:08:35] Verifying installation... [2013-10-20 17:08:35] BVerifyInstalledFiles: steamdeps.txt is 1451 bytes, expected 857 [2013-10-20 17:08:35] Verification complete Shutting down. . . [2013-10-20 17:08:36] Shutdown Finished uploading minidump (out-of-process): success = yes response: CrashID=bp-0da60690-c10c-4fd4-9ba9-5232d2131020
I reinstalled after deleting all steam related files in ~/.local/share/Steam, and now it works. So, it seems the update didn't delete something that it should have, and left an incompatible library.
Nothing extracted yet.
Console output from running steam: