Hey
So I'm using iPredator as my preferred VPN. When I had windows, my laptop would hold the connection to the vpn whereas my desktop would never connect. Now I have Backbox, before that, ubuntu. Both PC's now, I can connect to the VPN, and it will stay connected until I do anything online. Basically, if I go to a page, download, upload, etc. then the VPN connection will drop. As far as I know, my drivers are good. I have Broadcom drivers and a netgear wireless nic on the desktop, and the I don't even know on the laptop because the wireless drivers worked right "out of the [back]box", so I never bothered to look them up. I'm a security nut, so not being able to use my VPN is like walking around with an arrow in my knee.
I am a intermediate in using konsole, so you will have to post what I need to enter, but with that I should be able to make things work.
I have run sudo apt-get update && upgrade and everything is up-to-date there.