I\'ve been using Eclipse on Windows a lot, and recently started using it on Ubuntu for work.
My problem is, that the Javadoc tool til mostly is unformatted, E.g.
Got the same problem with the rendering of HTML inside the tooltips. After some fiddling around I got the solution:
Install libwebkitgtk-1.0-0 from the official Ubuntu repositories. It'S used by eclipse (and most likely other GTK applications) to render the HTML, but neither pre-installed on Kubuntu nor listed as a dependency in the eclipse packages.