For those who downloaded the image, you will notice some issue with radius server not finding the libltdl.so.3. This is a mistake I did when replacing libtool.
In order to correct it you will need to add libltdl.so.3.1.0 in /usr/lib as well as a link to it called libltdl.so.3,
Also, despite several attempts to run L2TP/IPSEC, I have it running with VISTA as long as the client is ran from an identical subnet, or at least close to. Attempts from the internet which should not be behind NAT do fail.
I have no clue about this and it gets me crazy so if anyone has an idea, please tell me! Seems as if VISTA is doing NAT traversal in transport mode where it is not suppose to!