Version: 1.11.3 (using KDE 4.2.3) OS: Linux Installed from: Slackware Packages When selecting (clicking on) a collapsed thread's first or parent message, the "View Source" entry in the View menu is disabled, thus the default shortcut "V" won't work either. One has to expand the thread and then "reclick" the parent or first message in the thread to make the "View Source" feature work.
Marking as duplicate of bug 190938 Thanks *** This bug has been marked as a duplicate of bug 190938 ***