Installed the game today, and like people above said 2-5 secs after launcher start pops up "League of Legends skinned.launcher not responding" send/don't send window... Actually after some time i got the patch downloaded and installed, and here is how...
you launch this launcher and click on options, then click backspace button or save settings, and do that all the time while patch downloads and installs. After what u can get into the game same way, click options then backspace and then click play... unfortunately launcher anyways crashes ~5-10 sec after u click play...
But still i have other problem, when game launches i write my user name and password, click join, after what pops up maestro error with information that game will exit now... Even that behind the error i see that it logs in...
I think launcher crash could be caused because of internet explorer, because i have the same problems with IE, when i launch IE it crashes and pops up send/don't send window...