Mountain Lion - OpenVPN issue
From ITSwiki
After updating OSX to the latest version 10.8 (Mountain Lion) - your application Tunnelblick might restart - after only 5-10 seconds.
Most irritatiting, but this can be worked around. This is also the tip you get off the developers website.
Open the VPN Details, and go into the SETTINGS tab. (see enclosed PDF)
There You chose Advanced, and under the WhileConnected you change the settings, so you have "Ignore" for the Network setting "Search domain"
It works, and you can stay connected