I'm sure that my Wi-Fi router is fine because my MacBook is the only one with this issue. I see this happen especially when I use Skype, FaceTime, etc. This has been going on for a month and can't really find a fix.
I did see that OS X 10.7 Lion has some connectivity issue but don't think it has been solved. I have tried many tips told by other users. I hope someone from here can help me.
I get an error saying "Connection Timeout".