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It installs a program PMB.EXE that is Pando media booster. If you try to tell me it is not a virus, I will have dispute that hotly with you. LOL installs it and it works whether LOL is up or not. All you have to do is fire up your resource monitor and look at all the net traffic it generates.
If that is not sleazy, I do not know what is, but if you have limits on how much you upload/download, pmb will put a nice dent in that number.
Nothing worse than a sleaze bag company installing extra programs on your computer without your knowledge.