Actually, I've always had some problems with the easy to use distros. But Slack & Debian always would install with no problems.
It was just some distros like Mandrake would take over the whole drive, earlier versions of Fedora wouldn't work with my 3com nic, stuff like that, but not problems with Slack & Debian.
I'm going to give Slack 11 a try when I get a free partition, but Debian is my main OS. I just don't like Slack stop using Gnome now.