Not sure if anyone is interested but the modem rebooted again this morning.
First Time Last Time Priority Description
Thu Aug 25 09:32:38 2011 Thu Aug 25 09:32:38 2011 Information (7) CableModem software upgrade failed
Thu Aug 25 09:32:38 2011 Thu Aug 25 09:32:38 2011 Error (4) SW upgrade Failed after download - Incompatible SW file
Thu Aug 25 09:32:38 2011 Thu Aug 25 09:32:38 2011 Information (7) SW dload: Invalid image signature!
Thu Aug 25 09:32:35 2011 Thu Aug 25 09:32:35 2011 Notice (6) SW Download INIT - Via Config file DHSUBsgvca69834ncxv9
Thu Aug 25 09:32:35 2011 Thu Aug 25 09:32:35 2011 Information (7) CableModem software download started
Thu Aug 25 09:32:35 2011 Thu Aug 25 09:32:35 2011 Information (7) Software upgrade has started.
Thu Aug 25 09:32:35 2011 Thu Aug 25 09:32:35 2011 Information (7) A software upgrade filename was specified in the config file.
Thu Aug 25 09:32:35 2011 Thu Aug 25 09:32:35 2011 Information (7) Authorized
Thu Aug 25 09:32:34 2011 Thu Aug 25 09:32:34 2011 Information (7) Registration complete!
Thu Aug 25 09:32:34 2011 Thu Aug 25 09:32:34 2011 Information (7) We registered with a DOCSIS 1.1 config file!
Thu Aug 25 09:32:34 2011 Thu Aug 25 09:32:34 2011 Information (7) Received a REG-RSP message from the CMTS...
Thu Aug 25 09:32:34 2011 Thu Aug 25 09:32:34 2011 Information (7) Sending a REG-REQ to the CMTS...
Thu Aug 25 09:32:34 2011 Thu Aug 25 09:32:34 2011 Information (7) CableModem SNMP configure complete
Thu Aug 25 09:32:34 2011 Thu Aug 25 09:32:34 2011 Information (7) IP init completed ok
Thu Aug 25 09:32:34 2011 Thu Aug 25 09:32:34 2011 Information (7) CableModem TFTP init ok
Thu Aug 25 09:31:57 2011 Thu Aug 25 09:31:57 2011 Information (7) CableModem DHCP client init ok
Thu Aug 25 09:31:57 2011 Thu Aug 25 09:31:57 2011 Critical (3) DHCP WARNING - Non-critical field invalid in response.
Thu Aug 25 09:31:51 2011 Thu Aug 25 09:31:51 2011 Information (7) MAP w/initial maintenance region received
Thu Aug 25 09:31:51 2011 Thu Aug 25 09:31:51 2011 Information (7) Beginning initial ranging...
Thu Aug 25 09:31:48 2011 Thu Aug 25 09:31:48 2011 Error (4) No initial ranging response from CMTS.
Thu Aug 25 09:31:48 2011 Thu Aug 25 09:31:48 2011 Critical (3) Init RANGING Critical Ranging Request Retries exhausted
Thu Aug 25 09:31:48 2011 Thu Aug 25 09:31:48 2011 Critical (3) No Ranging Response received - T3 time-out
Thu Aug 25 09:31:48 2011 Thu Aug 25 09:31:48 2011 Information (7) MAP w/initial maintenance region received
Thu Aug 25 09:31:46 2011 Thu Aug 25 09:31:46 2011 Critical (3) No Ranging Response received - T3 time-out
Thu Aug 25 09:31:46 2011 Thu Aug 25 09:31:46 2011 Information (7) MAP w/initial maintenance region received
Thu Aug 25 09:31:45 2011 Thu Aug 25 09:31:45 2011 Critical (3) No Ranging Response received - T3 time-out
Thu Aug 25 09:31:45 2011 Thu Aug 25 09:31:45 2011 Information (7) MAP w/initial maintenance region received
Thu Aug 25 09:31:41 2011 Thu Aug 25 09:31:41 2011 Critical (3) No Ranging Response received - T3 time-out
Thu Aug 25 09:31:41 2011 Thu Aug 25 09:31:41 2011 Information (7) MAP w/initial maintenance region received
Thu Aug 25 09:31:37 2011 Thu Aug 25 09:31:37 2011 Information (7) New UCD in effect
Thu Aug 25 09:31:37 2011 Thu Aug 25 09:31:37 2011 Information (7) Starting on-the-fly UCD change.
Thu Aug 25 09:31:37 2011 Thu Aug 25 09:31:37 2011 Information (7) MAP w/initial maintenance region received
Upstream power level has gone up a bit and I've been switched to QPSK.
Cable Modem Upstream
Upstream Lock : Locked
Upstream Channel ID : 4
Upstream Frequency : 29200000 Hz
Upstream Modulation : QPSK
Upstream Symbol Rate : 2560 Ksym/sec
Upstream transmit Power Level : 46.5 dBmV
Upstream Mini-Slot Size : 2
I've also been using the thinkbroadband ping monitor which shows this (ignore the 100% packet loss on the right, it stopped updating for some reason):
