After installing 3.5.6 randomly i find samba+winbind crashed with core dump and this error on my logs:

[2010/11/23 08:03:54.962670,  0] winbindd/winbindd_cache.c:3076(initialize_winbindd_cache)
  initialize_winbindd_cache: clearing cache and re-creating with version number 1
[2010/11/23 08:31:49.353990,  1] ../librpc/ndr/ndr.c:395(ndr_pull_error)
  ndr_pull_error(11): Pull bytes 2 (../librpc/ndr/ndr_basic.c:98)
[2010/11/23 08:31:49.371389,  1] ../librpc/ndr/ndr.c:395(ndr_pull_error)
  ndr_pull_error(11): Pull bytes 2 (../librpc/ndr/ndr_basic.c:98)
[2010/11/23 08:31:49.450506,  1] ../librpc/ndr/ndr.c:395(ndr_pull_error)
  ndr_pull_error(11): Pull bytes 2 (../librpc/ndr/ndr_basic.c:98)
[2010/11/23 08:31:49.524682,  1] ../librpc/ndr/ndr.c:395(ndr_pull_error)
  ndr_pull_error(11): Pull bytes 2 (../librpc/ndr/ndr_basic.c:98)
[2010/11/23 08:31:49.755005,  1] ../librpc/ndr/ndr.c:395(ndr_pull_error)
  ndr_pull_error(11): Pull bytes 4 (../librpc/ndr/ndr_basic.c:140)
[2010/11/23 08:31:49.755103,  0] lib/fault.c:46(fault_report)
  ===============================================================
[2010/11/23 08:31:49.755235,  0] lib/fault.c:47(fault_report)
  INTERNAL ERROR: Signal 11 in pid 15303 (3.5.6)
  Please read the Trouble-Shooting section of the Samba3-HOWTO
[2010/11/23 08:31:49.755352,  0] lib/fault.c:49(fault_report)
  
  From: http://www.samba.org/samba/docs/Samba3-HOWTO.pdf
[2010/11/23 08:31:49.755447,  0] lib/fault.c:50(fault_report)
  ===============================================================
[2010/11/23 08:31:49.755514,  0] lib/util.c:1465(smb_panic)
  PANIC (pid 15303): internal error
[2010/11/23 08:31:49.767011,  0] lib/util.c:1569(log_stack_trace)
  BACKTRACE: 54 stack frames:
   #0 winbindd(log_stack_trace+0x2d) [0xb72b010c]
   #1 winbindd(smb_panic+0x7c) [0xb72b023e]
   #2 winbindd [0xb729f56c]
   #3 [0xb7123400]
   #4 /lib/libc.so.6 [0xb6ea6d17]
   #5 /lib/libc.so.6(__libc_malloc+0x67) [0xb6ea8e97]
   #6 winbindd(_talloc_zero+0x95) [0xb76dd1b0]
   #7 winbindd [0xb71cf89f]
   #8 winbindd(_tevent_req_notify_callback+0x1a) [0xb72c23ca]
   #9 winbindd [0xb72c23ed]
   #10 winbindd(_tevent_req_error+0x31) [0xb72c243c]
   #11 winbindd(tevent_req_nterror+0x36) [0xb728c6a6]
   #12 winbindd [0xb72247f5]
   #13 winbindd(_tevent_req_notify_callback+0x1a) [0xb72c23ca]
   #14 winbindd [0xb72c23ed]
   #15 winbindd(_tevent_req_error+0x31) [0xb72c243c]
   #16 winbindd(tevent_req_nterror+0x36) [0xb728c6a6]
   #17 winbindd [0xb721da89]
   #18 winbindd(_tevent_req_notify_callback+0x1a) [0xb72c23ca]
   #19 winbindd [0xb72c23ed]
   #20 winbindd(_tevent_req_error+0x31) [0xb72c243c]
   #21 winbindd(tevent_req_nterror+0x36) [0xb728c6a6]
   #22 winbindd [0xb721cd71]
   #23 winbindd(_tevent_req_notify_callback+0x1a) [0xb72c23ca]
   #24 winbindd [0xb72c23ed]
   #25 winbindd(_tevent_req_error+0x31) [0xb72c243c]
   #26 winbindd(tevent_req_nterror+0x36) [0xb728c6a6]
   #27 winbindd [0xb720357a]
   #28 winbindd(_tevent_req_notify_callback+0x1a) [0xb72c23ca]
   #29 winbindd [0xb72c23ed]
   #30 winbindd(_tevent_req_done+0x16) [0xb72c2409]
   #31 winbindd [0xb71feacb]
   #32 winbindd(_tevent_req_notify_callback+0x1a) [0xb72c23ca]
   #33 winbindd [0xb72c23ed]
   #34 winbindd(_tevent_req_done+0x16) [0xb72c2409]
   #35 winbindd [0xb71fe2d8]
   #36 winbindd(_tevent_req_notify_callback+0x1a) [0xb72c23ca]
   #37 winbindd [0xb72c23ed]
   #38 winbindd(_tevent_req_done+0x16) [0xb72c2409]
   #39 winbindd [0xb722bda2]
   #40 winbindd(_tevent_req_notify_callback+0x1a) [0xb72c23ca]
   #41 winbindd [0xb72c23ed]
   #42 winbindd(_tevent_req_done+0x16) [0xb72c2409]
   #43 winbindd [0xb722c609]
   #44 winbindd(_tevent_req_notify_callback+0x1a) [0xb72c23ca]
   #45 winbindd [0xb72c23ed]
   #46 winbindd(_tevent_req_done+0x16) [0xb72c2409]
   #47 winbindd [0xb7295696]
   #48 winbindd(run_events+0x1fb) [0xb72bfe66]
   #49 winbindd [0xb72c0102]
   #50 winbindd(_tevent_loop_once+0x9d) [0xb72c064d]
   #51 winbindd(main+0xf68) [0xb71d13da]
   #52 /lib/libc.so.6(__libc_start_main+0xdc) [0xb6e52e9c]
   #53 winbindd [0xb71ce3e1]
[2010/11/23 08:31:50.861428,  0] lib/fault.c:326(dump_core)
  dumping core in /usr/local/samba/var/cores/winbindd

and i need to restart samba.
Can you help me?