I'm currently using 11.10.
I have a downloaded copy of 12.04 on CD.
Question: Is it the same if I hit the UPGRADE button on the update manager, or install 12.04 through the CD? Will I lose my work/settings/installed apps (LAMP, Lazarus, etc) by either method? I know if I boot from the CD and install, I'll most certainly lose everything... But my question is will this happen even if I run the CD while on Ubuntu?