I created a Written How-to and a Youtube video for this too.
I FOUND A WAY TO FOR THE WIFI TO WORK WITH WPA-PSK TKIP.
THIS IS HOW I DID IT: (i recommend to soft reset your device before you try this to ensure success chances)
1. TURN YOUR WI-FI ON. THEN CONNECT TO YOUR WIRELESS NETWORK (ENTER YOUR WPA KEY ETC).
2. LE THE WI-FI DO IT'S THING FOR ABOUT 5 SECONDS. (IN THE MEANTIME GO TO THE COMM MANAGER)
3. NOW TURN THE WI-FI OFF (WAIT ABOUT 1 SECONDS) AND TURN IT BACK ON. WALA, YOU SHOULD CONNECT AUTOMATICALLY RIGHT-AWAY (AFTER A FEW SECONDS) TO THE WI-FI YOU JUST CONFIGURED.
4. AFTER YOU HAVE CONFIGURED YOUR WI-FI CONNECTIONS, YOU ONLY NEED TO FOLLOW STEPS 2 & 3 TO RECONNECT TO YOUR CONFIGURED WI-FI NETWORK
(THIS EVEN WORKS WHEN THE PHONE GOES TO SLEEP MODE, THE WIFI RECONNECTS WITHOUT ANY ISSUES)
Here is the how-to on youtube for those that dont like to read. LOL
(you dont need to wait so long to turn wi-fi on and off as the video suggest, use the time suggestion of the written How-to above)
http://www.youtube.com/watch?v=kDI_cR7RXGw
I KNOW THIS IS NOT THE BEST SOLUTION, BUT IT SHOULD HOLD US UP (THOSE THAT DONT HAVE DATA PACKAGE LIKE ME) UNTIL A KITCHEN OR FIX IS CREATED. THIS WORKS FOR ME FLAWLESSLY, SO HOPE AT LEAST FOR MOST OF YOU THIS WILL WORK.
NOTE:
You will also find this how-to Here (where i originally posted it)
http://forum.ppcgeeks.com/showthread.php?t=7780&page=45
or
http://forum.ppcgeeks.com/showthread.php?t=7780