Bonjour,
Sur un autre compte même souci.
Mise a jour effectuée sans aucun résultats concluant.
Impossible de forcer le Finder à quitter.
Le log de la console :
(Premier marqueur à la coupure du wifi, second marqueur au redémarrage du wifi)
---------------------------------------------------------
25/08/13 14:28:19,587 Console[306] Marqueur - 25 ao�t 2013 14:28:19
25/08/13 14:28:26,000 kernel[0] wlEvent: en1 en1 Link DOWN virtIf = 0
25/08/13 14:28:26,000 kernel[0] AirPort: Link Down on en1. Reason 8 (Disassociated because station leaving).
25/08/13 14:28:26,000 kernel[0] en1::IO80211Interface:

ostMessage bssid changed
25/08/13 14:28:26,261 configd[17] setting hostname to "MacBook-Pro-de-Laurent.local"
25/08/13 14:28:26,265 configd[17] network changed: v4(en1-:192.168.1.28) DNS- Proxy- SMB
25/08/13 14:28:26,273 awacsd[68] InnerStore GetWakeInfoForZone: zero address for 1300751241.members.btmm.icloud.com.
25/08/13 14:28:26,274 awacsd[68] KV HTTP 0
25/08/13 14:28:31,277 awacsd[68] KV HTTP 0
25/08/13 14:28:31,287 digest-service[366] digest-request: uid=0
25/08/13 14:28:31,287 digest-service[366] digest-request: init request
25/08/13 14:28:31,288 digest-service[366] digest-request: init return domain: NEW-HOST-3 server: MACBOOK-PRO-DE-LAURENT
25/08/13 14:28:32,664 KernelEventAgent[55] tid 00000000 received event(s) VQ_NOTRESP (1)
25/08/13 14:28:32,664 KernelEventAgent[55] tid 00000000 type 'afpfs', mounted on '/Volumes/Data', from '//Laurent%20BERTHE@Time%20Capsule%20de%20Laurent._afpovertcp._tcp.local/Data', not responding
25/08/13 14:28:32,000 kernel[0] ASP_TCP Disconnect: triggering reconnect by bumping reconnTrigger from curr value 0 on so 0xffffff804abd5150
25/08/13 14:28:32,000 kernel[0] AFP_VFS afpfs_DoReconnect started /Volumes/Data prevTrigger 0 currTrigger 1
25/08/13 14:28:32,000 kernel[0] AFP_VFS afpfs_DoReconnect: doing reconnect on /Volumes/Data
25/08/13 14:28:32,000 kernel[0] AFP_VFS afpfs_DoReconnect: posting to KEA EINPROGRESS for /Volumes/Data
25/08/13 14:28:32,000 kernel[0] AFP_VFS afpfs_DoReconnect: Max reconnect time: 600 secs, Connect timeout: 15 secs for /Volumes/Data
25/08/13 14:28:32,000 kernel[0] AFP_VFS afpfs_DoReconnect: connect to the server /Volumes/Data
25/08/13 14:28:32,000 kernel[0] AFP_VFS afpfs_DoReconnect: connect on /Volumes/Data failed 65.
25/08/13 14:28:32,000 kernel[0] AFP_VFS afpfs_DoReconnect: sleep for 1 seconds and then try again
25/08/13 14:28:32,665 KernelEventAgent[55] tid 00000000 found 1 filesystem(s) with problem(s)
25/08/13 14:28:34,000 kernel[0] AFP_VFS afpfs_DoReconnect: connect to the server /Volumes/Data
25/08/13 14:28:34,000 kernel[0] AFP_VFS afpfs_DoReconnect: connect on /Volumes/Data failed 65.
25/08/13 14:28:34,000 kernel[0] AFP_VFS afpfs_DoReconnect: sleep for 2 seconds and then try again
25/08/13 14:28:36,000 kernel[0] AFP_VFS afpfs_DoReconnect: connect to the server /Volumes/Data
25/08/13 14:28:36,000 kernel[0] AFP_VFS afpfs_DoReconnect: connect on /Volumes/Data failed 65.
25/08/13 14:28:36,000 kernel[0] AFP_VFS afpfs_DoReconnect: sleep for 4 seconds and then try again
25/08/13 14:28:40,000 kernel[0] AFP_VFS afpfs_DoReconnect: connect to the server /Volumes/Data
25/08/13 14:28:40,000 kernel[0] AFP_VFS afpfs_DoReconnect: connect on /Volumes/Data failed 65.
25/08/13 14:28:40,000 kernel[0] AFP_VFS afpfs_DoReconnect: sleep for 8 seconds and then try again
25/08/13 14:28:41,279 awacsd[68] KV HTTP 0
25/08/13 14:28:48,000 kernel[0] AFP_VFS afpfs_DoReconnect: connect to the server /Volumes/Data
25/08/13 14:28:48,000 kernel[0] AFP_VFS afpfs_DoReconnect: connect on /Volumes/Data failed 65.
25/08/13 14:28:48,000 kernel[0] AFP_VFS afpfs_DoReconnect: sleep for 10 seconds and then try again
25/08/13 14:28:51,355 KernelEventAgent[55] tid 00000000 unmounting 1 filesystems
25/08/13 14:28:51,000 kernel[0] AFP_VFS afpfs_unmount: /Volumes/Data, flags 524288, pid 55
25/08/13 14:28:51,000 kernel[0] AFP_VFS afpfs_DoReconnect: get the reconnect token
25/08/13 14:28:51,000 kernel[0] AFP_VFS afpfs_DoReconnect: GetReconnectToken failed 32 /Volumes/Data
25/08/13 14:28:51,000 kernel[0] AFP_VFS afpfs_unmount : afpfs_DoReconnect sent signal for unmount to proceed
25/08/13 14:29:01,281 awacsd[68] KV HTTP 0
25/08/13 14:29:41,284 awacsd[68] KV HTTP 0
25/08/13 14:31:01,285 awacsd[68] KV HTTP 0
25/08/13 14:31:05,961 Console[306] Marqueur - 25 ao�t 2013 14:31:05
25/08/13 14:31:11,000 kernel[0] en1: 802.11d country code set to 'FR'.
25/08/13 14:31:11,000 kernel[0] en1: Supported channels 1 2 3 4 5 6 7 8 9 10 11 12 13 36 40 44 48 52 56 60 64 100 104 108 112 116 120 124 128 132 136 140
25/08/13 14:31:11,000 kernel[0] MacAuthEvent en1 Auth result for: 20:c9:d0:20:69:46 MAC AUTH succeeded
25/08/13 14:31:11,000 kernel[0] wlEvent: en1 en1 Link UP virtIf = 0
25/08/13 14:31:11,000 kernel[0] AirPort: Link Up on en1
25/08/13 14:31:11,000 kernel[0] en1: BSSID changed to 20:c9:d0:20:69:46
25/08/13 14:31:11,000 kernel[0] en1::IO80211Interface:

ostMessage bssid changed
25/08/13 14:31:11,000 kernel[0] AirPort: RSN handshake complete on en1
25/08/13 14:31:11,477 configd[17] network changed: v4(en1+:192.168.1.28) DNS+ Proxy+ SMB
25/08/13 14:31:11,485 UserEventAgent[11] Captive: en1: Not probing 'Réseau Wi-Fi de Laurent 5*GHz' (protected network)
25/08/13 14:31:11,488 configd[17] network changed: v4(en1!:192.168.1.28) DNS Proxy SMB
25/08/13 14:31:11,578 configd[17] setting hostname to "new-host-3.home"
25/08/13 14:31:11,776 airportd[387] _doAutoJoin: Already associated to Réseau Wi-Fi de Laurent 5*GHz. Bailing on auto-join.
25/08/13 14:31:11,786 airportd[387] _doAutoJoin: Already associated to Réseau Wi-Fi de Laurent 5*GHz. Bailing on auto-join.
25/08/13 14:31:16,518 digest-service[392] label: default
25/08/13 14:31:16,518 digest-service[392] dbname: od:/Local/Default
25/08/13 14:31:16,518 digest-service[392] mkey_file: /var/db/krb5kdc/m-key
25/08/13 14:31:16,518 digest-service[392] acl_file: /var/db/krb5kdc/kadmind.acl
25/08/13 14:31:16,519 digest-service[392] digest-request: uid=0
25/08/13 14:31:16,521 digest-service[392] digest-request: init request
25/08/13 14:31:16,522 digest-service[392] digest-request: init return domain: MACBOOKPRO-DB36 server: NEW-HOST-3
25/08/13 14:31:32,555 usbmuxd[38] AMDeviceStartSession (thread 0x100681000): Could not start session: kAMDInvalidHostIDError
25/08/13 14:31:32,555 usbmuxd[38] _AMDevicePreflightWorker (thread 0x100681000): Pair worker could not pair with device 10: 0xe8000082
25/08/13 14:31:32,555 com.apple.usbmuxd[38] HandleDeviceAttachHelperCallback preflighting failed for WiFi device 0xa-192.168.1.12:0: 0xe8000082. Ignoring device.
25/08/13 14:31:49,145 com.apple.usbmuxd[38] _heartbeat_failed heartbeat detected detach for device 0x9-192.168.1.13:0!
--------------------------------------------------------------------------
Enfin dernière remarque, si je déconnecte le wifi, que je ferme le capot du mac, que je l'ouvre de nouveau et que je me relog tous fonctionne correctement sans connexion !