build successful but:
./namecoin-qt
[xcb] Unknown sequence number while processing queue
[xcb] Most likely this is a multi-threaded client and XInitThreads has not been called
[xcb] Aborting, sorry about that.
namecoin-qt: Fatal IO error 11 (Die Ressource ist zur Zeit nicht verfügbar) on X server :0.
namecoin-qt: ../../src/xcb_io.c:274: poll_for_event: Zusicherung »!xcb_xlib_threads_sequence_lost« nicht erfüllt.
Abgebrochen (Speicherabzug geschrieben)