Mi Mac está constantemente escribiendo el mismo mensaje de error siguiente a system.log :
...
Feb 18 15:24:21 MBA mDNSResponder[51]: queryrecord_result_callback: mDNS_Lock: Locking failure! mDNS_busy (1) != mDNS_reentrancy (0)
Feb 18 15:24:21 MBA mDNSResponder[51]: queryrecord_result_callback: mDNS_Unlock: Locking failure! mDNS_busy (1) != mDNS_reentrancy (0)
Feb 18 15:24:21 MBA mDNSResponder[51]: queryrecord_result_callback: mDNS_Lock: Locking failure! mDNS_busy (1) != mDNS_reentrancy (0)
Feb 18 15:24:21 MBA mDNSResponder[51]: queryrecord_result_callback: mDNS_Unlock: Locking failure! mDNS_busy (1) != mDNS_reentrancy (0)
Feb 18 15:24:21 MBA mDNSResponder[51]: queryrecord_result_callback: mDNS_Lock: Locking failure! mDNS_busy (1) != mDNS_reentrancy (0)
Feb 18 15:24:21 MBA mDNSResponder[51]: queryrecord_result_callback: mDNS_Unlock: Locking failure! mDNS_busy (1) != mDNS_reentrancy (0)
...
A lo largo del día, esto se acumula en miles de mensajes que me obligaron a simplemente presionar el botón "Ignorar remitente" para detectar otras entradas.