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Since yesterday (perhaps some system updates), the Cisco AnyConnect VPN makes the system freeze when I try to connect. It looks like a memory leak, since the memory used goes up to 90%. I am using Kubuntu 12.04.

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I removed the file cert8.db from the ~/.mozilla/firefox directory and now it works again. I am not sure why this happened. The inspiration came from another problem I had long ago with the same client.

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Worked for me on Ubuntu 14.04 LTS. Thanks a lot! – Prolix Feb 8 at 10:22

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