Server CPU usage drops to zero and all clients show server not responding while the logs are spammed with:
RETRY STATUS: Retries: 9; waiting for pong true (1374894655816/1374894660815)
RETRY STATUS: Retries: 9; waiting for pong true (1374894656816/1374894660815)
RETRY STATUS: Retries: 9; waiting for pong true (1374894657816/1374894660815)
RETRY STATUS: Retries: 9; waiting for pong true (1374894655816/1374894660815)
RETRY STATUS: Retries: 9; waiting for pong true (1374894656816/1374894660815)
RETRY STATUS: Retries: 9; waiting for pong true (1374894657816/1374894660815)