how to recover after power outage

[John Almberg]

Blast... my beautiful FreeBSD servers were rudely switched off when  
my data had a power outage a couple hours ago. They restored power  
about 30 minutes later, and one box came up no problem.

The other has a login prompt on the serial console, but my login does  
not work. I get a "Login incorrect" message, even though the username/ 
password is correct.

When I try to SSH into the box, I get this (server name changed):

$ ssh user at example.com -p 48420
ssh: connect to host example.com port 48420: Connection refused

In other words, I seem to be locked out.

I don't want to do anything drastic without having a good idea what  
I'm doing. Any suggestions, much appreciated.

-- John