I just finished installing "Vector Linux 6.0 Light" and ran into the same issue the first time around. Since I've had various problems with Linux (other distros) and video cards, and considering the startup output message I got before the hang happened:
rc.x ==> going to multiuser GUI mode
... I figured this had something to do with some video settings for XServer.
On my first install, where the problem occured, I allowed the installation process to do "FULL-AUTO-PROBE" for XServer, instead of going through the VXCONF (xorg.conf setup).
On the second time around, where the problem no longer occured, I went through the XServer video config manually during the installation process and selected 16-bit color, just in-case my older video card didn't support 24-bit color.
I've successfully booted into the GUI version of Vector Linux now and everything looks great! Simple, clean, and fast - exactly what I was looking for.
Nice work on the installation process - it made things easy and straightforward.
For anyone who needs to know, my video card is made by Pine and the model is "XP 3800 32MB SDRAM AGP VGA".Specs Link
I can't find any other spec sheets on it since it's pretty old-school.