If it just says returned to ROM by reload it is probably pretty safe to assume that someone entered a command to cause the reload. There are also situations where it says returned to ROM by reload with some additional verbiage like this:
System returned to ROM by unknown reload cause - reason ptr 0xBFC3C0EC, PC 0x604
D0790, address 0x0 at 18:00:19 EST Tue Nov 1 2005
which is pretty obviously the result of a software problem on the router.
We are pleased to announce availability of Beta software for 16.6.3. 16.6.3 will be the second rebuild on the 16.6 release train targeted towards Catalyst 9500/9400/9300/3850/3650 switching platforms. We are looking for early feedback from custome...