Just a little update, i noticed on the system log the following messages:
May 3 19:37:53 tanhauser kernel: audit(1115141873.564:0): avc: denied { getattr } for pid=4508 exe=/usr/bin/ntlm_auth path=/var/run/winbindd dev=hda1 ino=458753 scontext=user_u:system_r:squid_t tcontext=system_u:object_r:winbind_var_run_t tclass=dir
May 3 19:37:53 tanhauser kernel: audit(1115141873.564:0): avc: denied { search } for pid=4508 exe=/usr/bin/ntlm_auth name=winbindd dev=hda1 ino=458753 scontext=user_u:system_r:squid_t tcontext=system_u:object_r:winbind_var_run_t tclass=dir
May 3 19:37:53 tanhauser kernel: audit(1115141873.564:0): avc: denied { getattr } for pid=4508 exe=/usr/bin/ntlm_auth path=/var/run/winbindd/pipe dev=hda1 ino=459137 scontext=user_u:system_r:squid_t tcontext=root:object_r:winbind_var_run_t tclass=sock_file
May 3 19:37:53 tanhauser kernel: audit(1115141873.564:0): avc: denied { write } for pid=4508 exe=/usr/bin/ntlm_auth name=pipe dev=hda1 ino=459137 scontext=user_u:system_r:squid_t tcontext=root:object_r:winbind_var_run_t tclass=sock_file
May 3 19:37:53 tanhauser kernel: audit(1115141873.564:0): avc: denied { connectto } for pid=4508 exe=/usr/bin/ntlm_auth path=/var/run/winbindd/pipe scontext=user_u:system_r:squid_t tcontext=root:system_r:winbind_t tclass=unix_stream_socket
May 3 19:37:53 tanhauser kernel: audit(1115141873.565:0): avc: denied { search } for pid=4508 exe=/usr/bin/ntlm_auth name=samba dev=hda1 ino=328794 scontext=user_u:system_r:squid_t tcontext=system_u:object_r:samba_var_t tclass=dir
any ideas?
Thanks!