There's a bit of a bug with match play challenges. It goes like this:
1 - You set up a challange and run the invite button (friend, or anyone) and wait.
2 - Someone's name pops up. They might play you (great) or decline (oh well),.
3 - If they decline, you hit the invite button again and it searches for a bout 5 sec then resets.
4 - If someone else's name pops up in that 5 sec period they get booted off pronto.
Now this might not seem like a major issue, but I pride myself on being a nice guy and it bothers me that people might think I had rejected them in such a rude manner, when in fact it was all down to the system.
Seems a simple enough bug to fix?