I had Kubuntu Hardy installed on my Thinkpad T30. I added XFCE CE to the hard disk. I allowed the prog to auto-part and install XFCE CE. It seemed to me that Kubuntu ran a little faster and smoother than Mint Xfce. My only benchmark was the speed at which mc running on a terminal would speed through the tree when I held the arrow button down (not very scientific - . The only thing that I could guess that was causing this was that the Mint XFCE partition was a logical partition and not a primary. And it was near the end of the drive.
I than did a clean install of Mint Linux (gnome) and it runs much faster than the xfce did (once again I used the midnight commander benchmark). I have since installed xfce4 meta package on top of Mint, and it seems to run very nicely.
Would there be any advantage to re-intstalling xfce ce to replace xfce running on gnome.