i think i have the same problem but when i have to choose a hero i can ignore it and get a random hero ( so i dont need to reconnect)
but after 2 minutes i get a lag , a big lag(about 3 minutes) and sometimes later in game i get this lag a second or third time and so it is for me unplayable....

i tried to reinstall it and i tried out the european version too, same problem.
so i've got vista and tried administrator and install it into different folders... nothing works so i dont know where is the problem(on windows xp it worked fine)

so i need help

greetings matopax

Getting this one too.
Yesterday everything was fine.

i fixed it.... but i'm not sure how... i fixed my cooling

I have the exact some issue the meastro error when i try picking a hero for a practice match think is i have 2 laptops next too each other and on the other laptop its fine there both running on vista under the same updates of windows now i wonder if this error is not just an indoor problem of riot games...

when ever u guys have time too look at this please do makes a uncomfy situation for quite a few gamers out there.

thnx in advance.