ok, I did this uncheck thing and Jamba spit out errors about "no player named xxxx" until I logged off.
I tried solo mode which just un-checks your team.
I tried everything and I can't get Jamba to quit spitting out errors about people missing.

I probably played 20 minutes before I tried to uncheck, maybe it was just a HUGE backlog of error messages.
I think it makes my machine lag when there are so many errors spewing out.

I even searched the jamba source trying to find where I makes that error but I couldn't find it, I wanted to comment it out.