I am basically a Ubuntu user. Since Ubuntu is based on Debian, I've tried to install Debian Etch from the 4.0r1 single Gnome CD but somehow it refused to boot and this only happens to Debian.
Since I've tried the Ubuntu 6.10/7.04 Installation from Ubuntu 6.06,
(http://mcuee.blogspot.com/2007/12/installing-ubuntu-from-unixlinux-system.html), I managed to install Debian Etch from Ubuntu 6.06 using the same method. One thing I need to mention is that I need to manually set up the timezone by changing the file /etc//default/rcS (UTC=no instead of the original UTC=yes).
Debian Etch (current stable) is said to be very stable and so far it works fine for me except one thing. I am not able to use Swiftfox or Mozilla Firefox to replace the stock Iceweasel (at 22.214.171.124). Stock Firefox under Ubuntu versions are not so stable with my desktop (NForce 3 motherboard with ATI9800SE AGP graphics card, AMD64 3000+ CPU, 1GB DDR RAM). Most likely it is a problem with the Xorg X server and Ubuntu version of Firefox. And this happens to Debian as well: it sometims crashes without warning. Swiftfox in general works better for me. Somehow even after I uninstalled Iceweasel and remove all things Iceweasel related, when I run Swiftfox or Firefox from Mozilla and check the version, it always shows Iceweasel 126.96.36.199. I am not so sure why. Hopefully I can figure it out in the near future.
Edit three hours after posting:
After enable the security updating, now it is at 188.8.131.52 and hopefully this will be better than the old 184.108.40.206. And I can install Swiftfox (the default version of 3.0b3-pre3 is not usable but the older version 220.127.116.11pre is ok). I can also run the original Mozilla Firefox 18.104.22.168.
One more problem is that the flash plugin does not work under Opera. I installed Opera before I found the solution to the above-mentioned problem.