HP Procurve 2626 resetting on random days, usually at same time..

Hello. For the last 2 weeks, our switch seems to be resetting on random days, but at the same time, 12:53:36. Below is an extract from the log file. I think an automatic TFTP is being attempted and its failing, causing the switch to be reset, but im not sure. Im not familiar with HP logs. Here's an extract taken after todays faliure:

 Event Log listing: Events Since Boot  ----
I 01/01/90 00:00:04 system: --------------------------------------------------
I 01/01/90 00:00:04 system: System went down:  04/12/06 12:53:36
I 01/01/90 00:00:04 system: Software exception at fileTransferTFTP.c:176 -- in
I 01/01/90 00:00:14 lacp: Passive Dynamic LACP enabled on all ports
I 01/01/90 00:00:14 stack: Stack Protocol disabled
I 01/01/90 00:00:15 igmp: IGMP feature enabled
I 01/01/90 00:00:15 igmp: Querier Election feature enabled
I 01/01/90 00:00:15 dhcpr: DHCP relay agent feature enabled
I 01/01/90 00:00:15 tftp: Enable succeeded
I 01/01/90 00:00:15 system: System Booted.
I 01/01/90 00:00:15 cdp: CDP enabled
I 01/01/90 00:00:18 ports: port 2 is Blocked by LACP
I 01/01/90 00:00:18 ports: port 3 is Blocked by LACP
I 01/01/90 00:00:18 ports: port 5 is Blocked by LACP
I 01/01/90 00:00:18 ports: port 6 is Blocked by LACP
I 01/01/90 00:00:19 ports: port 7 is Blocked by LACP
I 01/01/90 00:00:19 ports: port 8 is Blocked by LACP
I 01/01/90 00:00:19 ports: port 9 is Blocked by LACP
I 01/01/90 00:00:19 ports: port 11 is Blocked by LACP
I 01/01/90 00:00:19 ports: port 14 is Blocked by LACP
-- MORE --, next page: Space, next line: Enter, quit: Control-C

Quite urgent as it will be causing the Software boys to throw their toys out of the pram soon!!

Thanks