Don't know if this has been documented yet, but:
Blurry store icons in game. (Can add screenshot)
1200x800 fullscreen res
2.5Ghz Macbook pro 13" 2012
Intel HD4000 Graphics
© 2013 Riot Games, Inc. All rights reserved. Riot Games, League of Legends and PvP.net are trademarks, services marks, or registered trademarks of Riot Games, Inc.