[Jon22]

Just a little update, upstream levels have now gone back to normal and I'm also now on QAM16.

Cable Modem Upstream
Upstream Lock : Locked
Upstream Channel ID : 2
Upstream Frequency : 22200000 Hz
Upstream Modulation : QAM16
Upstream Symbol Rate : 2560 Ksym/sec
Upstream transmit Power Level : 45.0 dBmV
Upstream Mini-Slot Size : 2

Cable Modem Event Log
First Time Last Time Priority Description
Fri Sep 09 13:59:36 2011 Fri Sep 09 13:59:36 2011 Critical (3) Started Unicast Maintenance Ranging - No Response received - ...
Fri Sep 09 13:58:37 2011 Fri Sep 09 13:58:37 2011 Information (7) New UCD in effect
Fri Sep 09 13:58:37 2011 Fri Sep 09 13:58:37 2011 Information (7) Starting on-the-fly UCD change.
Fri Sep 09 13:57:37 2011 Fri Sep 09 13:57:37 2011 Information (7) New UCD in effect
Fri Sep 09 13:57:37 2011 Fri Sep 09 13:57:37 2011 Information (7) Starting on-the-fly UCD change.
Fri Sep 09 13:57:07 2011 Fri Sep 09 13:57:07 2011 Information (7) New UCD in effect
Fri Sep 09 13:57:07 2011 Fri Sep 09 13:57:07 2011 Information (7) Starting on-the-fly UCD change.
Fri Sep 09 12:44:58 2011 Fri Sep 09 12:44:58 2011 Information (7) CableModem software upgrade failed
Fri Sep 09 12:44:58 2011 Fri Sep 09 12:44:58 2011 Error (4) SW upgrade Failed after download - Incompatible SW file
Fri Sep 09 12:44:58 2011 Fri Sep 09 12:44:58 2011 Information (7) SW dload: Invalid image signature!
Fri Sep 09 12:44:55 2011 Fri Sep 09 12:44:55 2011 Notice (6) SW Download INIT - Via Config file 87dsfd;kfoA,.iyewrkl
Fri Sep 09 12:44:55 2011 Fri Sep 09 12:44:55 2011 Information (7) CableModem software download started
Fri Sep 09 12:44:55 2011 Fri Sep 09 12:44:55 2011 Information (7) Software upgrade has started.
Fri Sep 09 12:44:55 2011 Fri Sep 09 12:44:55 2011 Information (7) A software upgrade filename was specified in the config file.
Fri Sep 09 12:44:54 2011 Fri Sep 09 12:44:54 2011 Information (7) Authorized
Fri Sep 09 12:44:54 2011 Fri Sep 09 12:44:54 2011 Information (7) Registration complete!
Fri Sep 09 12:44:54 2011 Fri Sep 09 12:44:54 2011 Information (7) We registered with a DOCSIS 1.1 config file!
Fri Sep 09 12:44:54 2011 Fri Sep 09 12:44:54 2011 Information (7) Received a REG-RSP message from the CMTS...
Fri Sep 09 12:44:54 2011 Fri Sep 09 12:44:54 2011 Information (7) Sending a REG-REQ to the CMTS...
Fri Sep 09 12:44:54 2011 Fri Sep 09 12:44:54 2011 Information (7) CableModem SNMP configure complete
Fri Sep 09 12:44:54 2011 Fri Sep 09 12:44:54 2011 Information (7) IP init completed ok
Fri Sep 09 12:44:54 2011 Fri Sep 09 12:44:54 2011 Information (7) CableModem TFTP init ok
Time Not Established Time Not Established Information (7) CableModem DHCP client init ok
Time Not Established Time Not Established Critical (3) DHCP WARNING - Non-critical field invalid in response.
Time Not Established Time Not Established Information (7) MAP w/initial maintenance region received
Time Not Established Time Not Established Critical (3) No Ranging Response received - T3 time-out
Time Not Established Time Not Established Information (7) MAP w/initial maintenance region received
Time Not Established Time Not Established Information (7) Downstream sync ok
Time Not Established Time Not Established Information (7) Beginning initial ranging...
Time Not Established Time Not Established Information (7) downstream time sync acquired...
Time Not Established Time Not Established Information (7) Downstream sync ok
Time Not Established Time Not Established Information (7) starting ds time sync acquisition...

Weird...