After patching, running repair tool and installing the 64 bit fixes, have been unable to play three matches in a row. On third match system freezes after switching from mechlab to pre-lobby gameplay tips screen, must end task. Attempt to rejoin fails with same symptoms. First two failures on Canyon Network, TBR-S, skirmish (maybe). After rebooting played two matches and failed again on third match, same symptoms, Mining Collective, TBR-S, also skirmish, also unable to reconnect.
This has been occurring for at least several weeks but rather less often, one in 10 maybe, and have also often been able to reconnect after restarting client, until today.
Win7 Pro 64-bit, fully patched; GTX770 4GB w/latest drivers, latest surround version.
...