I would be really interested to see what you find out about that.  The reason why I asked is because I'm in the market of buying a new cordless phone and I have my eye on a 2.4GHz.  However, if it's only going to cause problems because it and the Apple Airport station are fighting for the airwaves then I might as well not get one.  I really do not want to spend all that money just find out that I can't have my cordless phone and my wireless network work together, you know?