I got the same problem here: Ubuntu 10.04.4 LTS
Aug 24 09:33:12 sol init: smbd main process ended, respawning
Aug 24 09:33:12 sol init: smbd main process (3878) terminated with status 1
Aug 24 09:33:12 sol init: smbd main process ended, respawning
Aug 24 09:33:12 sol init: smbd main process (3882)
Same problem here:
05:00.0 Ethernet controller: Atheros Communications Inc. Atheros
AR5001X+ Wireless Network Adapter (rev 01)
Oct 17 20:23:50 ubuntu kernel: [ 78.609316] ath5k phy1: noise floor
calibration timeout (2412MHz)
Oct 17 20:23:52 ubuntu kernel: [ 81.275199] ath5k phy1: noise floor