gaim crashes after closing conversation window

Binary package hint: gaim

distribution: ubuntu edgy (development branch)
package: gaim-1:2.0.0+beta3.1-1ubuntu9
steps to reproduce:
1. run gaim
2. wait for conversation window appear (when someone send you a message)
3. try to close this conversation window
4. wait approximately 10 sec.

===============gdb-gaim.txt================
GNU gdb 6.4.90-debian
Copyright (C) 2006 Free Software Foundation, Inc.
GDB is free software, covered by the GNU General Public License, and you are
welcome to change it and/or distribute copies of it under certain conditions.
Type "show copying" to see the conditions.
There is absolutely no warranty for GDB. Type "show warranty" for details.
This GDB was configured as "i486-linux-gnu"...Using host libthread_db library "/lib/tls/i686/cmov/libthread_db.so.1".

(gdb) handle SIG33 pass nostop noprint
Signal Stop Print Pass to program Description
SIG33 No No Yes Real-time event 33
(gdb) set pagination 0
(gdb) run
Starting program: /usr/bin/gaim
[Thread debugging using libthread_db enabled]
[New Thread -1221237072 (LWP 9535)]
[New Thread -1251234912 (LWP 9542)]
[New Thread -1259627616 (LWP 9545)]
[New Thread -1259893856 (LWP 9548)]
[Thread -1259893856 (LWP 9548) exited]

Program received signal SIGSEGV, Segmentation fault.
[Switching to Thread -1221237072 (LWP 9535)]
gtkconv_set_unseen (gtkconv=0x0, state=GAIM_UNSEEN_NONE) at ../../src/gtkconv.c:6797
6797 ../../src/gtkconv.c: No such file or directory.
        in ../../src/gtkconv.c
(gdb) backtrace
#0 gtkconv_set_unseen (gtkconv=0x0, state=GAIM_UNSEEN_NONE) at ../../src/gtkconv.c:6797
#1 0x080e8588 in focus_win_cb (w=0x81d78a8, e=0x866a8f8, d=0x832d910) at ../../src/gtkconv.c:6823
#2 0xb7b8cb00 in _gtk_marshal_BOOLEAN__BOXED () from /usr/lib/libgtk-x11-2.0.so.0
#3 0xb78c679b in g_closure_invoke () from /usr/lib/libgobject-2.0.so.0
#4 0xb78d6b93 in g_signal_chain_from_overridden () from /usr/lib/libgobject-2.0.so.0
#5 0xb78d7e7f in g_signal_emit_valist () from /usr/lib/libgobject-2.0.so.0
#6 0xb78d8279 in g_signal_emit () from /usr/lib/libgobject-2.0.so.0
#7 0xb7ca05f8 in gtk_widget_get_default_style () from /usr/lib/libgtk-x11-2.0.so.0
#8 0xb7b871e9 in gtk_main_do_event () from /usr/lib/libgtk-x11-2.0.so.0
#9 0xb7a107ea in _gdk_events_init () from /usr/lib/libgdk-x11-2.0.so.0
#10 0xb7852802 in g_main_context_dispatch () from /usr/lib/libglib-2.0.so.0
#11 0xb78557df in g_main_context_check () from /usr/lib/libglib-2.0.so.0
#12 0xb7855b89 in g_main_loop_run () from /usr/lib/libglib-2.0.so.0
#13 0xb7b87574 in gtk_main () from /usr/lib/libgtk-x11-2.0.so.0
#14 0x0810fd0c in main (argc=Cannot access memory at address 0x0
) at ../../src/gtkmain.c:764
(gdb) info registers
eax 0x0 0
ecx 0xe0105 917765
edx 0x0 0
ebx 0xb7d9cb90 -1210463344
esp 0xbfd565a0 0xbfd565a0
ebp 0xbfd565a8 0xbfd565a8
esi 0x80e8570 135169392
edi 0x81d78a8 136149160
eip 0x80e851a 0x80e851a <gtkconv_set_unseen+10>
eflags 0x210246 [ PF ZF IF RF ID ]
cs 0x73 115
ss 0x7b 123
ds 0x7b 123
es 0x7b 123
fs 0x0 0
gs 0x33 51
(gdb) thread apply all backtrace

Thread 3 (Thread -1259627616 (LWP 9545)):
#0 0xffffe410 in __kernel_vsyscall ()
#1 0xb75c3803 in poll () from /lib/tls/i686/cmov/libc.so.6
#2 0xb7855813 in g_main_context_check () from /usr/lib/libglib-2.0.so.0
#3 0xb7855b89 in g_main_loop_run () from /usr/lib/libglib-2.0.so.0
#4 0xb6f3c7e0 in link_set_io_thread () from /usr/lib/libORBit-2.so.0
#5 0xb787038f in g_thread_create_full () from /usr/lib/libglib-2.0.so.0
#6 0xb77ef504 in start_thread () from /lib/tls/i686/cmov/libpthread.so.0
#7 0xb75cd51e in clone () from /lib/tls/i686/cmov/libc.so.6

Thread 2 (Thread -1251234912 (LWP 9542)):
#0 0xffffe410 in __kernel_vsyscall ()
#1 0xb75c3803 in poll () from /lib/tls/i686/cmov/libc.so.6
#2 0xb7855813 in g_main_context_check () from /usr/lib/libglib-2.0.so.0
#3 0xb7855b89 in g_main_loop_run () from /usr/lib/libglib-2.0.so.0
#4 0xb71aee62 in e_book_get_type () from /usr/lib/libebook-1.2.so.9
#5 0xb787038f in g_thread_create_full () from /usr/lib/libglib-2.0.so.0
#6 0xb77ef504 in start_thread () from /lib/tls/i686/cmov/libpthread.so.0
#7 0xb75cd51e in clone () from /lib/tls/i686/cmov/libc.so.6

Thread 1 (Thread -1221237072 (LWP 9535)):
#0 gtkconv_set_unseen (gtkconv=0x0, state=GAIM_UNSEEN_NONE) at ../../src/gtkconv.c:6797
#1 0x080e8588 in focus_win_cb (w=0x81d78a8, e=0x866a8f8, d=0x832d910) at ../../src/gtkconv.c:6823
#2 0xb7b8cb00 in _gtk_marshal_BOOLEAN__BOXED () from /usr/lib/libgtk-x11-2.0.so.0
#3 0xb78c679b in g_closure_invoke () from /usr/lib/libgobject-2.0.so.0
#4 0xb78d6b93 in g_signal_chain_from_overridden () from /usr/lib/libgobject-2.0.so.0
#5 0xb78d7e7f in g_signal_emit_valist () from /usr/lib/libgobject-2.0.so.0
#6 0xb78d8279 in g_signal_emit () from /usr/lib/libgobject-2.0.so.0
#7 0xb7ca05f8 in gtk_widget_get_default_style () from /usr/lib/libgtk-x11-2.0.so.0
#8 0xb7b871e9 in gtk_main_do_event () from /usr/lib/libgtk-x11-2.0.so.0
#9 0xb7a107ea in _gdk_events_init () from /usr/lib/libgdk-x11-2.0.so.0
#10 0xb7852802 in g_main_context_dispatch () from /usr/lib/libglib-2.0.so.0
#11 0xb78557df in g_main_context_check () from /usr/lib/libglib-2.0.so.0
#12 0xb7855b89 in g_main_loop_run () from /usr/lib/libglib-2.0.so.0
#13 0xb7b87574 in gtk_main () from /usr/lib/libgtk-x11-2.0.so.0
#14 0x0810fd0c in main (argc=Cannot access memory at address 0x0
) at ../../src/gtkmain.c:764
======================================