Wireless Network Security: Change your WPA Encryption from TKIP to AES
Just a quick security tip based on some recent news, a couple Japanese computer scientists have figured out a way to crack WPA TKIP encryption in under a minute. This news came out a few weeks ago but after updating my wireless routers firmware I realized I hadn’t made the encryption type change yet myself, so I imagine many other people haven’t as well. WPA is still more secure than WEP, but now that TKIP has been hacked, it’s best to change your Wireless Router’s encryption method to AES to continue to be secure. Making the change is quick and easy, just login to your router’s administrative panel and you should find an option to switch the encryption from TKIP to AES. Obviously this isn’t strictly Mac news, but since it’s a security issue that effects everyone equally, it’s worth posting here.
Yahoo News: New Attack Cracks Common WiFi Encryption in a Minute

good advice and while you’re in your router settings check to see if any neighbors are on the same wireless channel as you, if they are change it to a unique channel