Karmic doesn't install

[john]

Hi all
I've got an AMD Athlon 64 X2 dual core 4200 with a GeForce 7600 GS
graphics card.
For some reason this machine doesn't like the RT kernel so I've been
running my box with all the apps from UBS but with the generic kernel.
I was really looking forward to UBS Karmic to see if the new RT kernel
worked out of the box but:

In the middle of the installation, when installing the applications, the
process stops and a red screen shows up saying installation failed, even
before I can install grub2.
I've tried both the 32bit and the amd64bit versions of the dvd and both
fail! It's never happened to me before with previous installations!
Anyone have the same problem? 

John