Verbindung via smb von Win7 zu Mac OSX plötzlich nicht mehr möglich - falsches Kennwort?

[Stergerl]

Hallo,

ich beschäftige mich seit einiger Zeit jetzt Netzwerken (bin aber ziemlicher Neuling).
Jetzt habe ich es geschafft, einen Ordner von meinen Mac (10.8.2) via smb an einen Win7 Rechner freizugeben.
(file sharing->user angelegt und mit smb freigegeben)
Hatte zunächst alles super geklappt.
Am nächsten Tag kommt am Win7 Rechner die Fehlermeldung, dass Netzwerklaufwerke nicht mehr eingebunden werden können.
Bei dem Versuch sich von Win nach Mac einzulogen (Mac ist sichtbar und es kommt das Einlogfenster) sagt mir Win7 jedoch, dass Benutzername und/oder Kennwort falsch ist. (obwohl das sicher nicht der Fall ist und am Vorabend funktionierte)

Hier ein Auszug von dem Log vom Mac

07:57:02 mac.fritz.box sandboxd[534] ([527]): mdworker(527) deny mach-lookup com.apple.ls.boxd
07:57:02 mac.fritz.box sandboxd[534] ([530]): mdworker(530) deny mach-lookup com.apple.ls.boxd
07:57:02 mac kernel[0]: Sandbox: sandboxd(534) deny mach-lookup com.apple.coresymbolicationd
07:57:04 mac.fritz.box digest-service[499]: digest-request: uid=0
07:57:04 mac.fritz.box digest-service[499]: digest-request: init request
07:57:04 mac.fritz.box digest-service[499]: digest-request: init return domain: BUILTIN server: mac
07:57:04 mac.fritz.box digest-service[499]: digest-request: uid=0
07:57:04 mac.fritz.box digest-service[499]: digest-request: init request
07:57:04 mac.fritz.box digest-service[499]: digest-request: init return domain: BUILTIN server: mac
07:57:04 mac.fritz.box digest-service[499]: digest-request: uid=0
07:57:04 mac.fritz.box digest-service[499]: digest-request: user=LYNDA-PC\lynda
07:57:04 mac.fritz.box digest-service[499]: NTLM domain not configured
07:57:04 mac.fritz.box digest-service[499]: digest-request: kdc failed with 36150275 proto=unknown
07:57:04 mac.fritz.box digest-service[499]: digest-request: guest failed with 22 proto=ntlmv2
07:57:04 mac.fritz.box digest-service[499]: digest-request: uid=0
07:57:04 mac.fritz.box digest-service[499]: digest-request: init request
07:57:04 mac.fritz.box digest-service[499]: digest-request: init return domain: BUILTIN server: mac
07:57:04 mac.fritz.box digest-service[499]: digest-request: uid=0
07:57:04 mac.fritz.box digest-service[499]: digest-request: init request
07:57:04 mac.fritz.box digest-service[499]: digest-request: init return domain: BUILTIN server: mac
07:57:04 mac.fritz.box digest-service[499]: digest-request: uid=0
07:57:04 mac.fritz.box digest-service[499]: digest-request: user=LYNDA-PC\lynda
07:57:04 mac.fritz.box digest-service[499]: NTLM domain not configured
07:57:04 mac.fritz.box digest-service[499]: digest-request: kdc failed with 36150275 proto=unknown
07:57:04 mac.fritz.box digest-service[499]: digest-request: guest failed with 22 proto=ntlmv2
07:57:04 mac.fritz.box digest-service[499]: digest-request: uid=0
07:57:04 mac.fritz.box digest-service[499]: digest-request: init request
07:57:04 mac.fritz.box digest-service[499]: digest-request: init return domain: BUILTIN server: mac
07:57:04 mac.fritz.box digest-service[499]: digest-request: uid=0
07:57:04 mac.fritz.box digest-service[499]: digest-request: init request
07:57:04 mac.fritz.box digest-service[499]: digest-request: init return domain: BUILTIN server: mac
07:57:04 mac.fritz.box digest-service[499]: digest-request: uid=0
07:57:04 mac.fritz.box digest-service[499]: digest-request: user=LYNDA-PC\lynda
07:57:04 mac.fritz.box digest-service[499]: NTLM domain not configured
07:57:04 mac.fritz.box digest-service[499]: digest-request: kdc failed with 36150275 proto=unknown
07:57:04 mac.fritz.box digest-service[499]: digest-request: guest failed with 22 proto=ntlmv2
07:57:04 mac.fritz.box digest-service[499]: digest-request: uid=0
07:57:04 mac.fritz.box digest-service[499]: digest-request: init request
07:57:04 mac.fritz.box digest-service[499]: digest-request: init return domain: BUILTIN server: mac
07:57:04 mac.fritz.box digest-service[499]: digest-request: uid=0
07:57:04 mac.fritz.box digest-service[499]: digest-request: init request
07:57:04 mac.fritz.box digest-service[499]: digest-request: init return domain: BUILTIN server: mac
07:57:04 mac.fritz.box digest-service[499]: digest-request: uid=0
07:57:04 mac.fritz.box digest-service[499]: digest-request: user=LYNDA-PC\lynda
07:57:04 mac.fritz.box digest-service[499]: NTLM domain not configured
07:57:04 mac.fritz.box digest-service[499]: digest-request: kdc failed with 36150275 proto=unknown
07:57:04 mac.fritz.box digest-service[499]: digest-request: guest failed with 22 proto=ntlmv2
07:57:10 mac.fritz.box digest-service[499]: digest-request: uid=0
07:57:10 mac.fritz.box digest-service[499]: digest-request: init request
07:57:10 mac.fritz.box digest-service[499]: digest-request: init return domain: BUILTIN server: mac
07:57:10 mac.fritz.box digest-service[499]: digest-request: uid=0
07:57:10 mac.fritz.box digest-service[499]: digest-request: init request
07:57:10 mac.fritz.box digest-service[499]: digest-request: init return domain: BUILTIN server: mac
07:57:10 mac.fritz.box digest-service[499]: digest-request: uid=0
07:57:10 mac.fritz.box digest-service[499]: digest-request: user=Lynda-PC\Lynda
07:57:10 mac.fritz.box digest-service[499]: NTLM domain not configured
07:57:10 mac.fritz.box digest-service[499]: digest-request: kdc failed with 36150275 proto=unknown
07:57:10 mac.fritz.box digest-service[499]: digest-request: guest failed with 22 proto=ntlmv2
07:57:10 mac.fritz.box digest-service[499]: digest-request: uid=0
07:57:10 mac.fritz.box digest-service[499]: digest-request: init request
07:57:10 mac.fritz.box digest-service[499]: digest-request: init return domain: BUILTIN server: mac
07:57:10 mac.fritz.box digest-service[499]: digest-request: uid=0
07:57:10 mac.fritz.box digest-service[499]: digest-request: init request
07:57:10 mac.fritz.box digest-service[499]: digest-request: init return domain: BUILTIN server: mac
07:57:10 mac.fritz.box digest-service[499]: digest-request: uid=0
07:57:10 mac.fritz.box digest-service[499]: digest-request: user=Lynda-PC\Lynda
07:57:10 mac.fritz.box digest-service[499]: NTLM domain not configured
07:57:10 mac.fritz.box digest-service[499]: digest-request: kdc failed with 36150275 proto=unknown
07:57:10 mac.fritz.box digest-service[499]: digest-request: guest failed with 22 proto=ntlmv2
07:57:11 mac.fritz.box SIMBL Enabler for Sandboxed Apps[526]: Will terminate until reinvoked again by launchd.
07:57:12 mac.fritz.box SIMBL Enabler for Sandboxed Apps[539]: Set up watching for containers directory at URL file://localhost/Users/Gensch/Library/Containers/
07:57:14 mac.fritz.box digest-service[499]: digest-request: uid=0
07:57:14 mac.fritz.box digest-service[499]: digest-request: init request
07:57:14 mac.fritz.box digest-service[499]: digest-request: init return domain: BUILTIN server: mac
07:57:14 mac.fritz.box digest-service[499]: digest-request: uid=0
07:57:14 mac.fritz.box digest-service[499]: digest-request: init request
07:57:14 mac.fritz.box digest-service[499]: digest-request: init return domain: BUILTIN server: mac
07:57:14 mac.fritz.box digest-service[499]: digest-request: uid=0
07:57:14 mac.fritz.box digest-service[499]: digest-request: user=LYNDA-PC\lynda
07:57:14 mac.fritz.box digest-service[499]: NTLM domain not configured
07:57:14 mac.fritz.box digest-service[499]: digest-request: kdc failed with 36150275 proto=unknown
07:57:14 mac.fritz.box digest-service[499]: digest-request: guest failed with 22 proto=ntlmv2
07:57:16 mac.fritz.box digest-service[499]: digest-request: uid=0
07:57:16 mac.fritz.box digest-service[499]: digest-request: init request
07:57:16 mac.fritz.box digest-service[499]: digest-request: init return domain: BUILTIN server: mac
07:57:16 mac.fritz.box digest-service[499]: digest-request: uid=0
07:57:16 mac.fritz.box digest-service[499]: digest-request: init request
07:57:16 mac.fritz.box digest-service[499]: digest-request: init return domain: BUILTIN server: mac
07:57:16 mac.fritz.box digest-service[499]: digest-request: uid=0
07:57:16 mac.fritz.box digest-service[499]: digest-request: user=LYNDA-PC\lynda
07:57:16 mac.fritz.box digest-service[499]: NTLM domain not configured
07:57:16 mac.fritz.box digest-service[499]: digest-request: kdc failed with 36150275 proto=unknown
07:57:16 mac.fritz.box digest-service[499]: digest-request: guest failed with 22 proto=ntlmv2
07:57:26 mac.fritz.box digest-service[499]: digest-request: uid=0
07:57:26 mac.fritz.box digest-service[499]: digest-request: init request
07:57:26 mac.fritz.box digest-service[499]: digest-request: init return domain: BUILTIN server: mac
07:57:26 mac.fritz.box digest-service[499]: digest-request: uid=0
07:57:26 mac.fritz.box digest-service[499]: digest-request: init request
07:57:26 mac.fritz.box digest-service[499]: digest-request: init return domain: BUILTIN server: mac
07:57:26 mac.fritz.box digest-service[499]: digest-request: uid=0
07:57:26 mac.fritz.box digest-service[499]: digest-request: user=Lynda-PC\lynda
07:57:26 mac.fritz.box digest-service[499]: NTLM domain not configured
07:57:26 mac.fritz.box digest-service[499]: digest-request: kdc failed with 36150275 proto=unknown
07:57:26 mac.fritz.box digest-service[499]: digest-request: guest failed with 22 proto=ntlmv2
07:57:27 mac.fritz.box SIMBL Enabler for Sandboxed Apps[539]: Will terminate until reinvoked again by launchd.
07:57:32 mac.fritz.box digest-service[499]: digest-request: uid=0
07:57:32 mac.fritz.box digest-service[499]: digest-request: init request
07:57:32 mac.fritz.box digest-service[499]: digest-request: init return domain: BUILTIN server: mac
07:57:32 mac.fritz.box digest-service[499]: digest-request: uid=0
07:57:32 mac.fritz.box digest-service[499]: digest-request: init request
07:57:32 mac.fritz.box digest-service[499]: digest-request: init return domain: BUILTIN server: mac
07:57:32 mac.fritz.box digest-service[499]: digest-request: uid=0
07:57:32 mac.fritz.box digest-service[499]: digest-request: user=Lynda-PC\Lynda
07:57:32 mac.fritz.box digest-service[499]: NTLM domain not configured
07:57:32 mac.fritz.box digest-service[499]: digest-request: kdc failed with 36150275 proto=unknown
07:57:32 mac.fritz.box digest-service[499]: digest-request: guest failed with 22 proto=ntlmv2
07:57:32 mac.fritz.box digest-service[499]: digest-request: uid=0
07:57:32 mac.fritz.box digest-service[499]: digest-request: init request
07:57:32 mac.fritz.box digest-service[499]: digest-request: init return domain: BUILTIN server: mac
07:57:32 mac.fritz.box digest-service[499]: digest-request: uid=0
07:57:32 mac.fritz.box digest-service[499]: digest-request: init request
07:57:32 mac.fritz.box digest-service[499]: digest-request: init return domain: BUILTIN server: mac
07:57:32 mac.fritz.box digest-service[499]: digest-request: uid=0
07:57:32 mac.fritz.box digest-service[499]: digest-request: user=Lynda-PC\Lynda
07:57:32 mac.fritz.box digest-service[499]: NTLM domain not configured
07:57:32 mac.fritz.box digest-service[499]: digest-request: kdc failed with 36150275 proto=unknown
07:57:32 mac.fritz.box digest-service[499]: digest-request: guest failed with 22 proto=ntlmv2
07:57:32 mac.fritz.box mdworker[544]: Unable to talk to lsboxd
07:57:32 mac.fritz.box mdworker[545]: Unable to talk to lsboxd
07:57:32 mac.fritz.box sandboxd[546] ([544]): mdworker(544) deny mach-lookup com.apple.ls.boxd
07:57:32 mac.fritz.box sandboxd[546] ([545]): mdworker(545) deny mach-lookup com.apple.ls.boxd
07:57:33 mac kernel[0]: Sandbox: sandboxd(546) deny mach-lookup com.apple.coresymbolicationd
07:57:35 mac.fritz.box digest-service[499]: digest-request: uid=0
07:57:35 mac.fritz.box digest-service[499]: digest-request: init request
07:57:35 mac.fritz.box digest-service[499]: digest-request: init return domain: BUILTIN server: mac
07:57:35 mac.fritz.box digest-service[499]: digest-request: uid=0
07:57:35 mac.fritz.box digest-service[499]: digest-request: init request
07:57:35 mac.fritz.box digest-service[499]: digest-request: init return domain: BUILTIN server: mac
07:57:35 mac.fritz.box digest-service[499]: digest-request: uid=0
07:57:35 mac.fritz.box digest-service[499]: digest-request: user=LYNDA-PC\lynda
07:57:35 mac.fritz.box digest-service[499]: NTLM domain not configured
07:57:35 mac.fritz.box digest-service[499]: digest-request: kdc failed with 36150275 proto=unknown
07:57:35 mac.fritz.box digest-service[499]: digest-request: guest failed with 22 proto=ntlmv2
07:57:40 mac.fritz.box digest-service[499]: digest-request: uid=0
07:57:40 mac.fritz.box digest-service[499]: digest-request: init request

Anpingen geht auch, gleiches Subnetz ist es auch, (bei mac) filesharing ist aktiv, user drin, firewalls sollten keine da sein..
Username ist am Win Rechner und in der Freigabe der Gleiche (bis auf einmal groß, einmal klein geschrieben, sollte aber egal sein? Passwort ist unterschiedlich.

Hat jemand einen Tipp für mich, oder kann einen Anwenderfehler ausschließen?
Vielen Dank schon mal