MacBook Pro and iMac keep losing wireless internet connection.

Again, I suggest all Airport user has such problem should directly report to Apple.
http://www.apple.com/feedback/airportextreme.html

Well Apple simply does not want to know or make a fix. So after 9 months of a love / hate relationship I have no choice but to give up, get rid and go back to Windows.

Apple, it's a crying shame. You are able to produce great designs but unfortunately you come up short in the execution. For business or corporate you're not even high enough to sniff MS's toes. Which is such as shame as I love the Mac OS and love the MacBook itself. But when it starts to lose you money through lost business, and there is no real support here then it's time to say goodbye and wait until Apple get's something that can actually work as well as a Chinese brand laptop with Windows on.

I have been having the same problem ever since upgrading to 10.6. Today I solved the problem by doing a few things, not sure which one did the trick but here is what I did

1. I took out the 10.6 install disk and booted from it and ran disk utility, i ran repair volume and then repair permissions.
2. I turned off wireless then deleted the home network from the list in the network pref pane
3. I deleted all the passwords in the keychain for the network
4. I did an SMC reset by shutting down, taking off battery, disconnecting power cord, putting battery back, holding power button for 15 sec then putting cord back on ( i think that is the order if not google it)

So far 6 hours, no drop no stall

4 days and still going strong