Apple refunded me my $30 for poor wifi performance in OSX Lion. I have to respect how they treat their customers. OSX lion needed more testing for wifi and I think they are realizing this with customer complaints. My situation was pretty simple, newer iMac with Airport Express (older one that worked fine in Snow Leopard) that does wireless G not N. Wifi would go out every time I walked away from the computer So if you are having wifi problems I suggest you contact apple and get your refund.
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