Description of problem:
when i use tab + alt well i thing it happened when i use the gnome extencion and evolution

Version-Release number of selected component:
evolution-3.6.4-3.fc18

Additional info:
backtrace_rating: 4
cmdline:        evolution
crash_function: html_text_get_link_at_offset
executable:     /usr/bin/evolution
kernel:         3.9.2-200.fc18.x86_64
uid:            1000
ureports_counter: 1

Truncated backtrace:
Thread no. 1 (10 frames)
 #0 html_text_get_link_at_offset at htmltext.c:2674
 #1 gtkhtml_editor_link_properties_description_changed_cb at gtkhtml-editor-signals.c:1056
 #5 g_signal_emit_by_name at gsignal.c:3393
 #6 end_change at gtkentry.c:2709
 #7 gtk_entry_set_text at gtkentry.c:7246
 #8 gtkhtml_editor_link_properties_url_changed_cb at gtkhtml-editor-signals.c:1104
 #12 g_signal_emit_by_name at gsignal.c:3393
 #13 end_change at gtkentry.c:2709
 #14 gtk_entry_set_text at gtkentry.c:7246
 #15 gtkhtml_editor_link_properties_show_window_cb at gtkhtml-editor-signals.c:1183