Rumble questions and issues ...

Are you sure it's a change of behavior about the Java 7 bots? I would expect the battle to still run and those bots to get zero scores. I've removed some bots from the participants list for requiring Java 7 and asked people to update with Java 6 compatibility - we shouldn't be requiring Java 7 yet. A more prominent notice about that somewhere might be nice. (Excluding them is also fine of course.)

I remember TheBrainPi could get into a broken state with his save data. I think that's part of what we "fixed" but maybe it's still possible? Could you delete him from the .data dir, or was this on a fresh install already?

I'm not sure if it is a change, but I remember I had this before and the missing bots where just replaced with another bot from the list. Hmm not sure if all bots get zero score. I just saw the battle starts and takes his time to finish and the upload starts like normal (I will check this). And you get a message on battle start 'bot ... could not loaded'. There are quite a lot bots written with java 7 so my guess was it is standard now.

Yes it's a new install from the scratch with all bots loaded (empty robots directory). I had to fix some broken links in the participants files. So - yep fresh install.

I'm on Oracle 1.6 for all my systems.