Por que o Steam não consegue se conectar à rede Steam?

Essa é a saída quando tento iniciar o vapor. É encerrado com a mensagem "Keine Verbindung zum Steam-Netzwerk möglich ..." (Sem conexão com a Steam-Network ...)

A remoção do appcache não ajudou até agora.

running Steam on ubuntu 13.04 64-bit
STEAM_RUNTIME is enabled automatically
Installing breakpad exception handler for appid(steam)/version(1370553818_client)
Installing breakpad exception handler for appid(steam)/version(1370553818_client)
unlinked 0 orphaned pipes
Gtk-Message: Failed to load module "overlay-scrollbar"
Installing breakpad exception handler for appid(steam)/version(1370553818_client)
[1004/102851:WARNING:proxy_service.cc(646)] PAC support disabled because there is no > system implementation
Installing breakpad exception handler for appid(steam)/version(1370553818_client)
Installing breakpad exception handler for appid(steam)/version(1370553818_client)
Installing breakpad exception handler for appid(steam)/version(1370553818_client)
Installing breakpad exception handler for appid(steam)/version(1370553818_client)
Installing breakpad exception handler for appid(steam)/version(1370553818_client)
Generating new string page texture 2: 48x256, total string texture memory is 49,15 KB
Generating new string page texture 3: 256x256, total string texture memory is 311,30 KB
(steam:12440): GLib-GIO-WARNING **: g_simple_async_result_complete() called from wrong context!
(steam:12440): GLib-GIO-WARNING **: g_simple_async_result_complete() called from wrong context!
(steam:12440): GLib-GIO-WARNING **: g_simple_async_result_complete() called from wrong context!
(steam:12440): GLib-GIO-WARNING **: g_simple_async_result_complete() called from wrong context!
(steam:12440): GLib-GIO-WARNING **: g_simple_async_result_complete() called from wrong context!
Installing breakpad exception handler for appid(steam)/version(1370553818_client)
Installing breakpad exception handler for appid(steam)/version(1370553818_client)
`menu_proxy_module_load': /home/ex00r/.local/share/Steam/ubuntu12_32/steam: undefined symbol: menu_proxy_module_load
(steam:12440): Gtk-WARNING **: Failed to load type module: (null)
(steam:12440): LIBDBUSMENU-GLIB-WARNING **: Trying to remove a child that doesn't believe we're it's parent.
(steam:12440): LIBDBUSMENU-GLIB-WARNING **: Trying to remove a child that doesn't believe we're it's parent.
(steam:12440): LIBDBUSMENU-GLIB-WARNING **: Trying to remove a child that doesn't believe we're it's parent.
(steam:12440): LIBDBUSMENU-GLIB-WARNING **: Trying to remove a child that doesn't believe we're it's parent.
(steam:12440): LIBDBUSMENU-GLIB-WARNING **: Trying to remove a child that doesn't believe we're it's parent.
(steam:12440): LIBDBUSMENU-GLIB-WARNING **: Trying to remove a child that doesn't believe we're it's parent.
(steam:12440): LIBDBUSMENU-GLIB-WARNING **: Trying to remove a child that doesn't believe we're it's parent.
(steam:12440): LIBDBUSMENU-GLIB-WARNING **: Trying to remove a child that doesn't believe we're it's parent.
(steam:12440): LIBDBUSMENU-GLIB-WARNING **: Trying to remove a child that doesn't believe we're it's parent.
(steam:12440): LIBDBUSMENU-GLIB-WARNING **: Trying to remove a child that doesn't believe we're it's parent.
(steam:12440): LIBDBUSMENU-GLIB-WARNING **: Trying to remove a child that doesn't believe we're it's parent.
roaming config store loaded successfully - 6339 bytes.
migrating temporary roaming config store
Adding license for package 0
Adding license for package 11
Adding license for package 79
Adding license for package 517
Adding license for package 1292
Adding license for package 2243
Adding license for package 2753
Adding license for package 3024
Adding license for package 4314
Adding license for package 4819
Adding license for package 8198
Adding license for package 8892
Adding license for package 11107
Adding license for package 11108
Adding license for package 11262
Adding license for package 13533
Adding license for package 14481
Adding license for package 17982
Adding license for package 32744
Adding license for package 32745
Adding license for package 32747
Generating new string page texture 4: 128x256, total string texture memory is 442,37 KB
Generating new string page texture 5: 384x256, total string texture memory is 835,58 KB
Generating new string page texture 6: 1024x256, total string texture memory is 1,88 MB
Generating new string page texture 7: 512x256, total string texture memory is 2,41 MB
Generating new string page texture 8: 24x256, total string texture memory is 2,43 MB
unlinked 2 orphaned pipes
CAsyncIOManager: 0 threads terminating.  0 reads, 0 writes, 0 deferrals.
CAsyncIOManager: 804 single object sleeps, 0 multi object sleeps
CAsyncIOManager: 0 single object alertable sleeps, 1 multi object alertable sleeps
[2013-10-04 10:28:50] Startup - updater built Jun  6 2013 13:48:29
[2013-10-04 10:28:50] Installation wird überprüft...
[2013-10-04 10:28:50] Verification complete
Shutting down. . .
[2013-10-04 10:29:08] Shutdown

Mesmo problema no fórum alemão do Ubuntu

http://forum.ubuntuusers.de/topic/steam-verbindet-nicht-zum-server/

Este comando também me ajudou

steam --reset

A remoção do appcache me ajudou até que uma nova versão do Steam fosse lançada, o que parece ter corrigido.

Você pode remover o appcache via terminal

rm -Rf ~/.steam/steam/appcache

Não faça isso com o sudo.

Consegui reproduzir isso com conectividade de rede perfeita quando o vapor é fechado inesperadamente. A solução no meu caso foi remover:

.local/share/Steam/config

Esta solução funcionou para mim e não me obrigou a reinstalar nenhum jogo, apenas para entrar novamente

Você já tentou as etapas deste artigo ?

Eu acho que, no meu caso, era apenas que os servidores Steam Auth estavam sobrecarregados / inativos. Não se pode fazer muito sobre isso; Eu recomendo verificar o Reddit para ver se alguma discussão recente menciona uma interrupção: https://www.reddit.com/r/Steam