Samsung has just re-released the fixed version of the Galaxy Tab 10.1 update which previously broke Wifi connectivity and this time around, it should work perfectly. For those who did not get the previous update can get this one over-the-air and for those who have the broken update with the broken wifi connection can grab it via the Kies Desktop app and update it from there.
Here's the statement issued by Samsung:
Earlier this morning, Samsung began releasing an over the air software update allowing Galaxy 10.1 users to upgrade to Android 3.2 while also resolving a Wi-Fi connectivity issues some Galaxy 10.1 users experienced following a previous software update. For Galaxy 10.1 users who are experiencing Wi-Fi connectivity issues and are unable to reconnect, the new software update may be downloaded and installed via Samsung's Kies desktop app.
Good to see that Samsung managed to pull off the update quickly when they noticed the problem and now re-issue the update to avoid any major complaints from the consumers.