Ok, I added one quick change that people may not see often. Or they may depending upon who they tick off in the game.
If you are online and someone attacks one of your planets or ship while you are online you will receive an instant message telling you who attacked and where. So if you see the java alert saying you have messages waiting while playing you might want to run to your message box.
Oh, sector defenses will NOT report being attacked. Only attacks on planets and ships are reported in the instant messages while online.
And remember this only happens if you are attacked while online. So don't expect to see a bunch of instant messages waiting for you when you log in. You will still have to check your logs to see if you are attacked.