diff -up sweep-0.9.3/src/main.c.multithread sweep-0.9.3/src/main.c --- sweep-0.9.3/src/main.c.multithread 2009-03-01 15:34:00.000000000 +0100 +++ sweep-0.9.3/src/main.c 2009-03-01 15:34:22.000000000 +0100 @@ -138,6 +138,7 @@ main (int argc, char *argv[]) #endif #endif + XInitThreads(); gtk_init (&argc, &argv); #ifdef HAVE_PUTENV