The mail-notification-2.0 ebuild in portage needs to define that mail-notification is compiled with LDFLAGS=-Wl,--export-dynamic. Otherwise when trying to start mail-notification --display-properties will result with the following error: mail-notification-CRITICAL **: signal handler "mn_properties_dialog_remove_clicked_h" not found aborting... Reproducible: Always Steps to Reproduce: 1. 2. 3.
I couldn't reproduce this myself, but it's in CVS nonetheless because it doesn't seem to harm anything, and I believe you :)