Hey everyone,
I followed oliviazsun's workaround and it seems to have fixed the network dropping problem for me. It's been 2 days now and my computer has yet to drop the network, but I still have my fingers crossed. Before I did the suggested workaround my iMac was dropping my home network approximately hourly, which was a big pain in the behind as I often need to remotely access my computer from school. Upon restart my computer now automatically joins the home network without issue. My sympathies for all those who cannot get this to work. I understand how frustrating that can be. To reiterate, here is oliviazsun's workaround:
"1. Renew DHCP Lease
System Pref -> Network -> Select Wi-Fi -> Advanced -> TCP/IP tab -> Click Renew DHCP Lease
http://osxdaily.com/2011/11/06/lion-wi-fi-problems-solution-mac/ - found a supporting article for this
2. Removing all preferred networks:
a) Back to Advanced screen, Wi-fi tab, remove all entries in "Preferred Networks" window -> OK and then Apply
b) go to KeyChain, remove your wi-fi network's password entry.
c) reapply the wi-fi fix and re-start, re-join my wi-fi network."
I hate to add my own 2 cents to the above bickering, but I believe such banter really detracts from the usefullness of this support forum. This is a user-to-user forum, and this particular thread is evidently already difficult to navigate. We are all in the same boat, and this is not the place for passing judgement on Apple Support. Instead, if you would like to submit feedback on your Support experiences, wether they be good or bad, I suggest checking this out instead: http://www.apple.com/support/feedback/
Thanks, and good luck everyone!