It seems that the Linux dedicated server build for Arma 2 OA is a little fragile at present. Running v1.59.84426 beta build at the moment, but may dropped back to the official build if this shows too many problems. The new linux server is running Debian 6 (32bit), after starting the Arma 2 OA server process it takes an age before it opens the 2302 port and actually creates the game lobby. Looking at the log it took 7 minutes last time...! I'm not sure if there is something wrong or it normally should take that long.
I'm going to leave it running for as long as possible, last night it failed but not sure why. I will have to keep an eye on the logs more closely today.
In the logs alot of errors regarding several of the modules coding which I had assumed was okay before. Not sure if that affects the gameplay, so will have to see.
Looking at the server list, I'm starting to see why alot of people run the Windows Dedicated Server version over the Linux one, which is a shame.