mine was perfect until last night after a software update. I think I did an update for safari and after a restart, couldn't connect to the internet. After trying everything that I could think of, I gave up and already plan a trip to the Apple store this weekend. Shut down my MBP. Woke up this morning then turn it back on and try again, and it work ! So, I had no idea what happened last night after the update. It's fine right now, but gave me a big scare last night.
Mine's perf, too. In fact you could say it's too perfect. Maybe I should exchange it. I'm sick of everyone complaining but me; and I do so enjoy a good whinge.