Wireless Security

Currently, there are many topics revolving wireless LAN security. Topics are around WEP, 802.11 and their weakness and some vendors like CISCO have responded with LEAP using ACS and RADIUS to plug the security holes. My question is, has anyone actully implemented a successful infrastructure using these new products and if so, how secure are you now?
I’m aware that WLANs have successfully been implemented in schools, hospitals, etc. but I’d like to hear from people in the Finacial Industry, like Dean Whitter, Morgan Stanley, where customer’s data is Extreamly Sensitive.