I'm having a problem with my Airport blinking on and off when I'm connected to a wireless network. I'll be online and everything will be fine, and then my Airport icon goes gray and I get disconnected. Then it will turn black again, and gray, and black, and gray.... It just blinks on and off for a minute or two, and then reconnects and everything is fine. It's obnoxious when I'm trying to do something, or when I'm talking to someone on iChat, and I keep getting disconnected. I haven't seen any pattern to it; it's just random. At first I thought it might be my internet service or router, but my roommate has the same MacBook that I do, and we both use the same internet and wireless router, and he never has a problem. Plus, mine always disconnects when I go to Starbucks or some other place that provides wireless internet. Thanks for any help or suggestions.