The TechZone shows how to fix the most common Wi-Fi problems.

If you're like me, you've come to take wireless pretty much for granted. Everywhere I go, I expect to be able to connect to the internet to check my email, chat with my friends or get some work done. It seem no matter where I am, I can open my notebook and find a wireless network to plug into. However, there are times when I'm logged into a wireless network and suddenly lose the connection or the speed suddenly drops to an unbearable level. I'm sure you have experience this as well.

How To Troubleshoot Wireless Networking Problems