Our border router update to E.07.37 caused a bad problem: the router didn't route any more appropriately.
A few minutes after the update the router stopped reacting to any management functions (ssh, snmp, ping), and also most of the traffic was dropped.
What was surprising, some SSH and POP3S connections from outside (to internal network) were working as usual, but almost all other connections were dropped (for example web servers were unreachable).
Reverting to 07.30 was easy from primary flash, fortunately. The situation lasted about 30 minutes until sysadmin got there to press the reset button.
So, I *don't* recommend 07.37 to anyone, based on my experience. We don't know yet, what was the actual problem with that.