Duno if it is a bug or lag, but this is about the battle page...
 

I'll be in a battle, with at least (if not more than) 30 seconds to choose a tactic, and as soon as I make my selection it forwards me to the cool down page rather then the "wait for opponent" or "battle result" page.

I haven't been paying close enough attention to see if this is causing me to win or lose more battles or anything like that. It's not every time, it only happens occasionally, but often enough to be an annoyance.

I'm using Firefox 3.6.12

That's strange. I thought I had taken care of all of those... it shouldn't send you back to the front lines until it's displayed the status message at least once.

I've just seen this myself. It appears to be triggered by winning against an opponent that doesn't select an attack.