Created attachment 347750 [details] mail-client:claws-mail-3.9.1:20130508-130614.log [ebuild U ~] mail-client/claws-mail-3.9.1 [3.9.0-r1] USE="dbus doc gnutls%* gtk3%* imap ipv6 pdf%* perl%* pgp%* python%* rss%* session smime spell xface -archive% -bogofilter -calendar% -clamav% -debug% -gdata% -ldap -libnotify% -networkmanager% -nntp -pda* -spam-report% -spamassassin -startup-notification -webkit% (-crypt%*) (-dillo%*) (-ssl%*)" 0 kB
Any reason why USE=gtk3 is not masked? This is a typical failure there.
gtk3 is not ready for primetime yet.