As far as I could recall, I did not use Linux/Debian for about two years. Last week, I had an open time slot and I decided to installed my favorite Distro Debian/Lenny on my aging desktop to play around a little.
My experience so far is mixed. I would say the general user experience has enhanced so much that I actually spent less time fixing the system for a better environment. On the other hand, numerous details of the Desktop environment have much to be desired, and if fixed properly, could contribute so much to the user experience, to the degree that one can term Linux Desktop as “just works”.