Hi Devyn, thanks for this post! I used it recently to convert from my former Kubuntu installation to Xubuntu. I wanted something lighter, tighter and faster. Kubuntu gave me some headaches with indexing etc. Anyhow, when I followed the first couple of lines you gave in this post, all went well, but for the fact that Kubuntu was never really removed and/or auto-cleaned. Especially the latter command Code: sudo apt-get auto-clean never worked. The message I got was: Code: E: invalid operation auto-clean or something along those lines (I forgot to note, sorry). I left it as it was and continued with purging (Kubuntu apps) and auto-cleaning, following the code you gave above. I checked the launcher and many of the Kubuntu application continued to exist there. Also, when Xubuntu was started, I could still choose between KDE plasma desktop and Xubuntu session, much like what happened to Mitt Green earlier in the thread. So I did one or two reboots and still they were there. I also need to work so I put the rest aside, until I tried to auto-clean once more in the evening. Then something happended that I did not understand: I saw lines flashing by telling me that several apps were being removed, but among those many apps had either the letter "x" or downright "xfce" in their names. After a reboot, I still could choose between KDE and Xubuntu, but Xubuntu could not run "xfce-4", and then gave me a message that "GNOME" could not be found. KDE still worked, so that's why I'm able to write you this. Do you have any idea what could have gone wrong and/or how to solve this ? Let me know if you need more specific info, so I can look it up for you. Thanks in advance !