Can you try with newest evolution and tango-icon-theme installed additionally (ubuntu-desktop should pull it in - which is default)?
** Changed in: evolution (Ubuntu) Severity: Normal => Minor -- [Dapper] Evolution's "Not Junk" icon is not themed using Human https://launchpad.net/bugs/41391 -- desktop-bugs mailing list desktop-bugs@lists.ubuntu.com https://lists.ubuntu.com/mailman/listinfo/desktop-bugs