Updated to 10.7.3. Wifi drops constantly.
Updated this morning. Then it would not hold a wifi connection for more than 5 seconds at a time. Had to use Lion Recovery to install a Time Machine backup to 10.7.2. That took over two hours. After that wifi was semi-ok. Lion has always had a problem with wifi. I am very disappointed with how Apple has handled the Lion rollout. So many problems. I would suggest anyone having problems with wifi think twice before installing this update.
iMac, Mac OS X (10.7.2)