** Description changed:

  NetworkManager crashes on my system when I roam from an open network to
  a WPA-protected one.
+ 
+ please test proposed fix: https://bugs.edge.launchpad.net/ubuntu/+source
+ /network-manager/+bug/145683/comments/15
+ 
  
  Backtrace from NM:
  
  Program received signal SIGSEGV, Segmentation fault.
  [Switching to Thread -1221174384 (LWP 4691)]
  0x08074acf in wpa_ctrl_request (ctrl=0x80a1ef8, cmd=0x80b2b50 "SCAN", 
      cmd_len=4, reply=0x80ccc38 "$", reply_len=0xb73651e4, msg_cb=0)
      at wpa_ctrl.c:179
  179     wpa_ctrl.c: No such file or directory.
          in wpa_ctrl.c
  (gdb) bt
  #0  0x08074acf in wpa_ctrl_request (ctrl=0x80a1ef8, cmd=0x80b2b50 "SCAN", 
      cmd_len=4, reply=0x80ccc38 "$", reply_len=0xb73651e4, msg_cb=0)
      at wpa_ctrl.c:179
  #1  0x0806c47a in nm_utils_supplicant_request_with_check (ctrl=0x80a1ef8, 
      expected=0x8082502 "OK", func=0x8083968 "nm_device_802_11_wireless_scan", 
      err_msg_cmd=<value optimized out>, format=0x808272a "SCAN")
      at NetworkManagerUtils.c:803
  #2  0x0805d779 in nm_device_802_11_wireless_scan (user_data=0x80a0028)
      at nm-device-802-11-wireless.c:2120
  #3  0xb7d8d8d6 in ?? () from /usr/lib/libglib-2.0.so.0
  #4  0x080a0028 in ?? ()
  #5  0xb7cf88ac in __pthread_mutex_unlock_usercnt ()
     from /lib/tls/i686/cmov/libpthread.so.0
  #6  0xb7d8d11c in g_main_context_dispatch () from /usr/lib/libglib-2.0.so.0
  #7  0xb7d9055f in ?? () from /usr/lib/libglib-2.0.so.0
  #8  0x0809fdb8 in ?? ()
  #9  0x00000000 in ?? ()

-- 
Network manager crash with WPA
https://bugs.launchpad.net/bugs/145683
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