We have been very successful with the 3.5 vpn client to pix 515 with IAS (w2k) radius authentication except for 1 user.
His profile is exactly like all the others in his OU, but for some reason, he cannot auth via the vpn. We have tried connecting from more than 1 laptop and more than 1 location. The odd thing is that he can auth to the Ras server with radius just fine. The Ras server is also the vpn's radius server. Other users can connect to either the pix or ras just fine. The VPN pool for that particular group is 254 addresses and there are never more than 5 concurrent connections.
I am 97.32% this is a windows issue, but just wanted to see if anyone else has run into this.