I'm trying to install Cisco VPN Client and the installation hangs at the end while the message "Installing Cisco Systems Virtual Adapter" appears on the installation progress window. I used to have version 5.0.05.0290 and I was trying to upgrade to 5.0.06.0160 (which first uninstalls the previous version) when it all started to go wrong. I even tried with the latest VPN client available from Cisco (5.0.07.0290).
After the installation hangs I have to manually kill the process which sometimes leaves a corrupted TCP/IP stack which I have to rebuild. I've tried many times and lately I have been trying with every single non-microsoft service deisabled and no startup programs running to no avail. Inmstallation still hangs at the same place.
How do I get back my VPN Client?