I've been hit with Leavebuster because the league of legends client loading screen freezes. The client works perfectly fine in custom matches and the only way to fix it is to test it in online games. I think it's to do with my connection but, I think I'm going to get banned before I figure out what the problem is.
Adding it to the exclusion list on my anti-virus appears to have solved the problem for now.
Now, on a twenty minute leavebuster for five games for disconnecting after fixing the problem. Sweet.