Thunar crashes when trying to connect to smb://servername/sharename and gvfs-smb is not installed. Full backtrace and other data available in referenced RedHat bugzilla - Fedora 18 bug 903120.

Version-Release number of selected component:
Thunar-1.6.2-1.fc18

Additional info:
backtrace_rating: 4
cmdline:        Thunar --daemon
crash_function: thunar_file_get_display_name
executable:     /usr/bin/thunar
kernel:         3.7.2-201.fc18.x86_64
remote_result:  NOTFOUND
uid:            1000

Truncated backtrace:
Thread no. 1 (10 frames)
 #0 thunar_file_get_display_name at thunar-file.c:2942
 #1 thunar_window_poke_file_finish at thunar-window.c:2222
 #2 thunar_browser_poke_location_file_finish at thunar-browser.c:687
 #3 thunar_file_get_async_finish at thunar-file.c:1007
 #4 g_simple_async_result_complete at gsimpleasyncresult.c:775
 #5 _g_simple_async_result_complete_with_cancellable at gvfsdaemondbus.c:736
 #6 async_got_mount_info at gdaemonfile.c:626
 #7 async_get_mount_info_response at gdaemonvfs.c:880
 #8 g_simple_async_result_complete at gsimpleasyncresult.c:775
 #9 reply_cb at gdbusproxy.c:2632