Here's a good one. I just got a new Uniden 2.4GHz cordless phone and was talking on it while sitting at my iMac which is hooked to the Internet via AirPort Extreme and a Linksys 2.4GHz router 2 feet away. I first started noticing odd behavior when my Network connection to my G5 failed, then I noticed the AirPort signal strength in the menu bar had diminished so I opened Internet Connect Control Panel and saw that the signal strength had dropped to half, and then soon dropped off all together and "linksys" had disappeared from my list of networks. I had no connection on the wireless iMac or my laptop but I did have a hard wire connection on my G5. I assumed that my router had failed and went to get an ethernet cable to get hard wired, but decided to look at the manuals first and right in the iMac manual it says that cordless phones could interfere with AirPort connections. So, I reset the router, turned the modem off and on and sure enough... the wireless connection was re-established and I've not had any trouble since. Just thought I'd share for general information.