I migrated remote users from MS PPTP to Cisco Client VPN 2 month ago. Eversince this was done, it has been nothing but long lockups, freeze, disconnects and crashing Citrix sessions. Prior to migration, all connections were coming through a PIX 520 to a MS VPN server on the inside. Now, it is an ASA 5520 as a VPN server.
I applied "crypto ipsec df-bit clear outside" but no luck. I also confirmed Client MTU settings are 1300. Internal users have no issues with access Citrix. It is only remote uers started exeperiencing the issue when migrated to Cisco VPN client.