>>493
svn版はちょっとまってください。
とりあえず1.9.6のgdbのトレースをつけます。
頻度は週に１〜2回程度です。

0x00adc480 in g_slist_reverse () from /lib/libglib-2.0.so.0
(gdb) bt
#0 0x00adc480 in g_slist_reverse () from /lib/libglib-2.0.so.0
#1 0x005fc307 in pango_layout_check_lines (layout=0xb1176d8)
at pango-layout.c:3679
#2 0x005fc3d7 in pango_layout_get_extents_internal (layout=0xb1176d8,
ink_rect=0xbffca044, logical_rect=0x0, line_extents=0x0)
at pango-layout.c:2318
#3 0x005fd406 in pango_layout_get_pixel_extents
(layout=0xb1176d8,
ink_rect=0xbffca044, logical_rect=0x0) at pango-layout.c:2520
#4 0x00d4ee15 in Pango::Layout::get_pixel_ink_extents ()
from /usr/lib/libpangomm-1.4.so.1
#5 0x0827d3ea in SKELETON::DragableNoteBook::adjust_tabwidth
(this=0xb123a08)
at dragnote.cpp:243