I took a quick look at the logs however they don't tell me much. Do you mine turning up the logging for the VPN client so that it will dump debug logs instead and send attach to this post.
To enable debug logging:
1. Open the GUI and enable logging.
2. Close the GUI and open the vpnclient.ini file located in the install directory.
3. Modify the Log Level settings so that IKE, IPSec and CVPND are set to level 15.
4. Save and close the vpnclient.ini file.
5. Open the GUI and make a connection.
6. After the failure go ahead and attach the log file and should get a better idea of what is happening.
Also are you running Vista buy any chance? Also are you using Soft Tokens or the physical token cards?