Just wanted to bring this to Riot's attention (again)
I had played a full game of ARAM right before this one and tried to play one more for the night (since the servers have been semi-working/semi-down all evening) and I kept getting the firewall error. I tried to reconnect and relog about 4 or 5 times until I finally hit reconnect and landed at this screen with "LEAVER" plastered over the top. That's really screwed up, and it looks like two of my other teammates weren't able to connect either. I don't want a huge "leaver" on my match history, especially when I never had an opportunity to actually leave a match. :/