Version: (using KDE KDE 3.4.2) Installed from: Mandrake RPMs Kompare's window caption typically begins with a long "file:///..." prefix and contains two full path names which cannot be seen at a glance on a taskbar button. Also, it fails to add a space (but only a colon) between the two pathnames, so I really wonder if they can even wordwrap properly. At any rate, finding a semicolon in a path name is harder visually than finding a space. Thus, the caption fails to be useful at a short glance.
Fixed in KDE 4.2.1 and higher. It is now 2 dashes and a space on either side which should be much better to distinguish the paths compared.