Source-package 'dbus' doesn't make "-dbg" packages.  Had to rebuild.

Full stacktrace:

#0  0x00e39aeb in _dbus_list_unlink (list=0xb76bcb5c, link=0x88da83c) at dbus-list.c:517
#1  0x00e39de9 in _dbus_list_remove_link (list=0xb76bcb5c, link=0x88da83c) at dbus-list.c:537
#2  0x00e39e3a in _dbus_list_pop_last (list=0xb76bcb5c) at dbus-list.c:689
#3  0x00e28a63 in _dbus_validate_signature_with_reason (type_str=0xb76bcc1c, type_pos=0, len=1)
    at dbus-marshal-validate.c:218
#4  0x00e28d5c in validate_body_helper (reader=0xb76bcc98, byte_order=<value optimized out>, walk_reader_to_end=1, 
    p=0x88dec32 "u", end=0x88df410 "", new_p=0xb76bcd24) at dbus-marshal-validate.c:558
#5  0x00e29022 in validate_body_helper (reader=0xb76bcda0, byte_order=<value optimized out>, walk_reader_to_end=0, 
    p=0x88dec30 "\005\001u", end=0x88df410 "", new_p=0xb76bcdf4) at dbus-marshal-validate.c:623
#6  0x00e28fb7 in validate_body_helper (reader=<value optimized out>, byte_order=<value optimized out>, 
    walk_reader_to_end=1, p=0x88dec2f "", end=0x88df410 "", new_p=0xb76bce2c) at dbus-marshal-validate.c:477
#7  0x00e2941a in _dbus_validate_body_with_reason (expected_signature=0xe49ca8, expected_signature_start=0, 
    byte_order=108, bytes_remaining=0xb76bcf38, value_str=0x88be8dc, value_pos=0, len=2048)
    at dbus-marshal-validate.c:708
#8  0x00e251ff in _dbus_header_load (header=0x88c3394, mode=DBUS_VALIDATION_MODE_DATA_IS_UNTRUSTED, 
    validity=0xb76bcfd8, byte_order=108, fields_array_len=45, header_len=64, body_len=102, str=0x88be8dc, start=0, 
    len=2048) at dbus-marshal-header.c:987
#9  0x00e2cd37 in load_message (loader=0x88be8d8) at dbus-message.c:3533
#10 _dbus_message_loader_queue_messages (loader=0x88be8d8) at dbus-message.c:3683
#11 0x00e35b69 in _dbus_transport_get_dispatch_status (transport=0x86d9798) at dbus-transport.c:1080
#12 0x00e35cda in _dbus_transport_queue_messages (transport=0x86d9798) at dbus-transport.c:1107
#13 0x00e1fe27 in _dbus_connection_get_dispatch_status_unlocked (connection=0x88c32d8) at dbus-connection.c:4021
#14 0x00e212a0 in check_for_reply_and_update_dispatch_unlocked (connection=0x88c32d8, pending=<value optimized out>)
    at dbus-connection.c:2250
#15 0x00e22262 in _dbus_connection_block_pending_call (pending=0x88c06d0) at dbus-connection.c:2356
#16 0x00e2fa51 in dbus_pending_call_block (pending=0x88da83c) at dbus-pending-call.c:705
#17 0x00fcf2a4 in ?? () from /usr/lib/libgnome-keyring.so.0
#18 0x00fd87c5 in gnome_keyring_find_items_sync () from /usr/lib/libgnome-keyring.so.0
#19 0x003d36f4 in ?? () from /usr/lib/pymodules/python2.6/gtk-2.0/gnomekeyring.so
#20 0x080e0b13 in call_function (f=0x88ddc00, throwflag=0) at ../Python/ceval.c:3750
#21 PyEval_EvalFrameEx (f=0x88ddc00, throwflag=0) at ../Python/ceval.c:2412
#22 0x080e1dc4 in fast_function (f=0x88e0774, throwflag=0) at ../Python/ceval.c:3836
#23 call_function (f=0x88e0774, throwflag=0) at ../Python/ceval.c:3771
#24 PyEval_EvalFrameEx (f=0x88e0774, throwflag=0) at ../Python/ceval.c:2412
#25 0x080e1dc4 in fast_function (f=0xb6d0112c, throwflag=0) at ../Python/ceval.c:3836
#26 call_function (f=0xb6d0112c, throwflag=0) at ../Python/ceval.c:3771
#27 PyEval_EvalFrameEx (f=0xb6d0112c, throwflag=0) at ../Python/ceval.c:2412
#28 0x080e28a2 in PyEval_EvalCodeEx (co=0x882a698, globals=0x8833c64, locals=0x0, args=0x8896718, argcount=1, 
    kws=0xb6d00f68, kwcount=0, defs=0x0, defcount=0, closure=0x0) at ../Python/ceval.c:3000
#29 0x0816b57f in function_call (func=0x8847e64, arg=0x889670c, kw=0x889facc) at ../Objects/funcobject.c:524
#30 0x0806241a in PyObject_Call (func=0x8847e64, arg=0x889670c, kw=0x889facc) at ../Objects/abstract.c:2492
#31 0x080df959 in ext_do_call (f=0xb6d00f94, throwflag=0) at ../Python/ceval.c:4063
#32 PyEval_EvalFrameEx (f=0xb6d00f94, throwflag=0) at ../Python/ceval.c:2452
#33 0x080e28a2 in PyEval_EvalCodeEx (co=0x84d9650, globals=0x84fa3e4, locals=0x0, args=0x8848970, argcount=4, 
    kws=0xb6d00f78, kwcount=0, defs=0x0, defcount=0, closure=0x0) at ../Python/ceval.c:3000
#34 0x0816b57f in function_call (func=0x84ebd84, arg=0x8848964, kw=0x869168c) at ../Objects/funcobject.c:524
#35 0x0806241a in PyObject_Call (func=0x84ebd84, arg=0x8848964, kw=0x869168c) at ../Objects/abstract.c:2492
#36 0x080df959 in ext_do_call (f=0xb6d00dfc, throwflag=0) at ../Python/ceval.c:4063
#37 PyEval_EvalFrameEx (f=0xb6d00dfc, throwflag=0) at ../Python/ceval.c:2452
#38 0x080e28a2 in PyEval_EvalCodeEx (co=0x84dd770, globals=0x84fa3e4, locals=0x0, args=0x889a4e8, argcount=4, 
    kws=0xb6d00de0, kwcount=0, defs=0x0, defcount=0, closure=0x0) at ../Python/ceval.c:3000