Description of problem:
On the Tasks list, I accidentally clicked on the "Summary" bar which would normally reverse the sorting of my tasks. This time, Evolution died.

This is not reproducible at all and could even have been completely unrelated---Evolution was running a bit slow at the time.

Version-Release number of selected component:
evolution-3.6.3-2.fc18

Additional info:
backtrace_rating: 4
cmdline:        evolution
crash_function: free_columns
executable:     /usr/bin/evolution
kernel:         3.8.2-206.fc18.x86_64
uid:            1000

Truncated backtrace:
Thread no. 1 (10 frames)
 #1 free_columns at gal-a11y-e-table-item.c:83
 #2 eti_header_structure_changed at gal-a11y-e-table-item.c:962
 #7 e_table_header_move at e-table-header.c:695
 #8 ethi_drag_data_received at e-table-header-item.c:828
 #9 _gtk_marshal_VOID__OBJECT_INT_INT_BOXED_UINT_UINT at gtkmarshalers.c:5276
 #13 g_signal_emit_by_name at gsignal.c:3393
 #14 gtk_drag_selection_received at gtkdnd.c:1922
 #18 g_signal_emit_by_name at gsignal.c:3393
 #19 gtk_selection_retrieval_report at gtkselection.c:2983
 #20 gtk_selection_convert at gtkselection.c:1114