I found Fedora Core 3 quite hard to use as a desktop, mostly because of their policy of not pre-including anything non-OSS. It also had a lot of USB mounting issues for me, though that may be fixed by now. Anyhow I was happy to delete it.
Mepis is my desktop OS, I love it for having nearly everything configured as I want it at the completion of the easiest imaginable install, and for just not getting in my way on anything. One might call it debian for dummies. I tried Kubuntu (not regular ubuntu since I loathe gnome) and it was okay, but I had some configuration issues and since it's debian-derived it seemed like an overcomplicated way to do all the same stuff as Mepis. Tried Mandrake 10 a couple years ago, it was okay but had the same issues most distros had for me (some do-it-yourself non-OSS installs, USB). I plan to try SUSE on a spare partition soon since I've heard good things of it, actually attempted a 10.1 RC install but it didn't go well (I guess I'll wait for 10.1 final).
Antonio said:
It works but I am not familiar with the linux command, that's why I give it up
I'm allergic to the command line myself. Luckily my VPS (which runs Red Hat Enterprise) has WHM/CPanel so I rarely need to use SSH, though I do from time to time... servers will inevitably require learning to use a shell.
On my desktop though, I can't think of any real need to use a shell. Sometimes I use it for a quick chmod, but I could do that with a konqueror root session (alt+f2 then kdesu konqueror, or just making a shortcut to kdesu konqueror).