My mk v3.1 have bug
jan/27/2008 02:49:06 system,error,critical router was rebooted without proper shu
tdown
jan/27/2008 13:16:24 system,error,critical router was rebooted without proper shu
tdown
hi,
this happens when you reboot the router pluggin off the 220V.
Martín.
Dear Ibersystems,
You are right but it happened to my MT V3.1 too. There was no power down or any other reason to rebooted without proper shutdown except rebooted from it’s own OS or hardware problem. I don’t know why this kind of rebooting happens. 
And BTW it happened 2 times after upgrading to V3.1
what hardware you are using?
It would be worth beefing up the PSU if your using an RB333. I find they need a good stable supply. A universal laptop PSU makes a great power source for routerboards.
Malcolm