This problem occurs due to the presence of Cisco bug ID CSCsf27202.
The problem starts when these conditions are met:
Follow one of these steps as a workaround:
Note: The radius-with-expiry command has been deprecated and the new command is password-management in software version 7.2 and later.
For more information on how to use the Expiry feature using the Microsoft Internet Authentication Server, refer to VPN 3000 RADIUS with Expiry Feature using Microsoft Internet Authentication Server.
For further information on the authentication configuration, refer to PIX/ASA 7.x and Cisco VPN Client 4.x for Windows with Microsoft Windows 2003 IAS RADIUS Authentication Configuration Example.
Use the Software Download Center in order to download the PIX Firewall software.