Client conflict with netflix
I often watch netflix while waiting for friends to sign or or just while getting stuck in a constant loop of dodges, but I have found that with recent patches there is a serious conflict between the two.
Try it out to show that it isn't just my computer/setup----
Begin watching a movie on netflix, start up league and enter your password to log in and then alt+tab back to the movie. Watch it fail to connect to servers and crash out. Then log in as normal, start watching the movie and try to get out of the champ select with netflix running in the background. I almost guarantee it will fail against and not get to the loading screen.