Version: 1.1 (using KDE KDE 3.1KDE 3.0.3) Installed from: Gentoo PackagesGentoo Packages OS: Linux The select operation popup window, which appear when we doubleclick on the message arrow in a sequence diagram, let us choose from the list of operation of the object at the base of the arrow. This is not coherent with the call action. It should list the operation of the *target* object instead. A--op-->B should mean B.op() called by A, not A.op() as it is implicitly implied now in Umbrello!!!
I think you muse be using a fairly old version, this bug was fixed some time ago.