I had to install mozex (http://mozex.mozdev.org/) in order to make
Mozilla invoke Evolution for me when I clicked on a mailto: link.
I shouldn't have needed to do that for myself.
I think the problem is actually because Mozilla isn't designed to run
in GNOME natively (does it register with gnomeui ?).
Fedora Core 2 is now maintained by the Fedora Legacy project for
security updates only. If this problem is a security issue, please
reopen and reassign to the Fedora Legacy product. If it is not a
security issue and hasn't been resolved in the current FC3 updates or
in the FC4 test release, reopen and change the version to match.
Closing per lack of response. Note that FC1 and FC2 are no longer
supported even by Fedora Legacy. Please install a still supported
version and retest. If this still occurs on FC3 or FC4 and is a
security issue, please assign to that version and Fedora Legacy. If it still
occurs on FC5 or FC6, please reopen and assign to the correct version.
mozilla itself is not shipped in FC6, so for most of these bugs that means
testing in FC5 or against firefox.