A few observations, some new and some confirming what others have found.
Tried to do a text-based install but the installer couldn't find the CD on any of the three PCs I tested (P3 and P4 with IDE drives) though 6.0 Gold could find the CD on them all. So in the end I installed using the GUI installer which found the CD.
I had trouble using the partitions created in GParted though, the installer refused to mount them. It wouldn't accept partitions made in cfdisk either and I ended up creating partitions using a DOS-based version of Partition Magic which were accepted OK. Strange. I also got a message saying that my user name already exisited when trying to install over an existing installation, as if the partitions were not being reformatted by the installer.
For the first install I used grub, which is the default, but when I rebooted I got a message saying something like "You need to load the kernel first" and couldn't get any further. Not being a grubber I reinstalled and chose lilo, which worked OK.
My video card wasn't set up right (nVidia GeForce4) and I got the "System has no X clients" message and ended up in an xterm session. I logged into the TUI and tried to set up X using vxconf and it worked one time but not another. Maybe that's just me. I re-ran vxconf and chose Vesa so that I could carry on testing.
Got on the internet easily using the NIC (I've no wireless) and installed a few packages using Gslapt: firefox, thunderbird, grsync, nano, wine, xarchiver. All went ok except no menu icon for Xarchiver. Audacity is in the repos but wouldn't install as it has a missing dependency: needs pixman>=0.18.2 but version installed is 0.16.6.
Finally I compiled easytag and keepassx from source and installed truecrypt from its own installer. No problems with them.
I haven't used the system too much yet, but it's looking pretty good so far.