Valgrind slows things a lot, that's normal. Could you install libgnomevfs2-0-dbgsym libgpango1.0-0-dbgsym and try to get a new log? Could you also change the number of callers to 30? -- [apport] xchat-gnome crashed with SIGSEGV in pango_attribute_destroy() https://launchpad.net/bugs/94733