I am in the process of opening a JTAC ticket on this error. I have noticed it mainly on Vista machines but has also occurred on a couple of XP machines. So far, it looks like a Network Connect problem. I have Network Connect to use ESP (UDP 4500) with NCP (SSL) fallback after 15 seconds. When the machine connects with ESP, everything works fine. When the machine falls back to NCP (SSL Deflate) things go terribly wrong. On average, the user is disconnected within 30 seconds. I am running 6.0R3.1 and have virtual ports configured. I have read some issues with the virtual port which may not be helping the situation. Let me know if you folk have these symptoms.
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