Description of problem:
I have been having trouble with Evolution sometimes causing my entire X session to slow down (the X process CPU will continually stay high while Evolution is open). The issue seemed mitigated by running in express mode (--express), but this is the first time that it has segfaulted. Evolution had been running for a few hours this way (off and on usage; mostly running in the background), and then when I switched to it, it segfaulted immediately.

Version-Release number of selected component:
evolution-3.4.4-1.fc17

Additional info:
libreport version: 2.0.13
abrt_version:   2.0.12
backtrace_rating: 4
cmdline:        evolution --express
crash_function: folder_tree_selectable_update_actions
kernel:         3.5.3-1.fc17.x86_64

truncated backtrace:
:Thread no. 1 (10 frames)
: #0 folder_tree_selectable_update_actions at em-folder-tree.c
: #1 focus_tracker_selectable_update_actions at e-focus-tracker.c
: #2 focus_tracker_targets_received_cb at e-focus-tracker.c
: #3 request_targets_received_func at gtkclipboard.c
: #4 selection_received at gtkclipboard.c
: #8 g_signal_emit_by_name at gsignal.c
: #9 gtk_selection_retrieval_report at gtkselection.c
: #10 _gtk_selection_notify at gtkselection.c
: #11 _gtk_marshal_BOOLEAN__BOXEDv at gtkmarshalers.c
: #12 _g_closure_invoke_va at gclosure.c