Hi all
I simply can't get my VPN to work with OS X 10.5.6 on a MacBook 3.1

I enter all information correctly, connect and it says connected and I can see that I get an ip (in system preferences) - only problem is, it isn't connected. It's somehow routing my data from the browser around the VPN and still broadcasting my real IP. I've talked to the admin and he can see that I'm connected but he isn't receiving any data. The problem is the same with any VPN account.

It's works fine on my PowerBook OS X 10.4

Anyone know what causes this? I've trawled the net and found no explanations or fixes.

Thanks in advance.