Router reset it's self?

[#1]

Not sure if this an indication of the router dieing? Aprox. 30mins ago, my internet dropped, so I waited 10 minutes, still couldn't connect so I reset the router. I still could not connect after a further 10 minutes, the Internet light remained red and then a couple of minutes later all of the lights turned off. Shortly following, the Power light turned on and several minutes later the rest turned on and I could finally reconnect, essentially indicating that the router randomly rebooted it's self?
Thanks
Afran

[#2]

I just came on here to ask exactly that!
Have PlusNet just done a "push" firmware upgrade?  All routing stopped and the router status said the Internet was disconnected, which the red light confirmed. The modem seemed still to be synched up. I manually rebooted it from the power switch, but after it came back up it restarted itself approximately 3 times more.
Router log (standard supply TG582n FTTC) reports:

Quote

Jan 1 00:02:01 SNTP Unable to contact server: 198.18.1.4 Info Jan 1 00:01:45 LOGIN User admin logged in on [HTTP] (from <my pc>) Warning Jan 1 00:01:10 PPP link up (Internet) [<redacted>] Info Jan 1 00:01:10 FIREWALL event (1 of 19): deleted rules Info Jan 1 00:01:10 FIREWALL event (1 of 32): modified rules Info Jan 1 00:01:10 FIREWALL event (1 of 50): created rules Info Jan 1 00:01:04 PPP CHAP Receive success (Internet) Error Jan 1 00:01:03 [ANTI_SPOOFD] (err) llist_getobject_at for ENV.ANTI_SPOOFD's value failed     Info Jan 1 00:01:02 PPP CHAP Receive challenge from rhost PCL-AG06 (Internet) Info Jan 1 00:00:51 PPP CHAP Receive challenge from rhost acc-aln1.uog (Internet) Warning Jan 1 00:00:48 DHCS server up Info Jan 1 00:00:48 FIREWALL event (1 of 1): deleted rules Info Jan 1 00:00:47 FIREWALL level changed to Standard. Error Jan 1 00:00:42 UPnP framework enabled Error Jan 1 00:00:37 UPnP framework disabled Error Jan 1 00:00:35 UPnP framework disabled Info Jan 1 00:00:33 FIREWALL has been enabled Error Jan 1 00:00:33 UPnP framework disabled Info Jan 1 00:00:26 FIREWALL event (1 of 1): modified rules Info Jan 1 00:00:26 FIREWALL event (1 of 1): created rules Warning Jan 1 00:00:16 KERNEL Warm restart Info Jan 1 00:00:08 FIREWALL has been enabled

No real help, other than maybe the anti-spoof error line? That is before it has logged in via CHAP though, so its probably complaining about nothing.
TBB/BTW/Ookla Speed tests were slow to begin with but came back close to what I had tested a few hours ago. Latency to bbc.co.uk is lower (10.5ms compared to 14ms) and the BTW info page reports the same profile speed, so I believe the modem hasn't restarted.
Any thoughts?
Edited to add: Users Finguz and WWWombat on the ping graph page seem to have had a drop at the same time: http://community.plus.net/ping-graphs/

[#3]

Might have been this?

[#4]

Interesting. It could have been that, although it was a bit early. I don't think I have ever had a router reboot itself several times like that before, most odd. Usually It would just disconnect and then reconnect.

[#5]

I lost my connection a 3am      TBB showed all red this morning  , thing was i had a good game gateway  it put me BGN so i hopped straight away pcl-ag01. now see how it performs after 6pm