At first I like KDE ... but after trying gnome im not going back, here's why :
- File searching is much more reliable in gnome
- Network browsing on mixed windows ads domains/workgroups actually works reliably in gnome. And did not need to configure anything other than how I would get my IP. Whereas I had a nightmare trying to get smb4k to work reliably, although sometimes it would find network servers and mostly would not.
- Kde has too many configuration tools that do the same thing and can be confusing.
- Gnome has working theme/icon/gdm installers, which I never got to work in kde. I was able to download tar files point gnome at them and install them, kde would complain that they were not valid themes - blah blah
Please dont get me wrong but I do love Kde too, particularly Amarok, and the nice features of konqueror in Kde3.4
At the end of the day, I think these two desktop environments suit different users. If you have time to piss about with a temperamental system that has all the fancy features you could shake a stick at; go for kde.
If you are in a business or educational environment, then you simply don't have the time to support Kde, and therefore Gnome is a more reliable choice.