I'm having some problems sharing files from Windows 7 to a Mac (Snow Leopard) on my network. This was working fine for about 1 day and now the Mac is unable to connect to the Windows 7 (64-bit) host. On the Mac, I'm seeing a "Connected Failed" when trying to connect from Finder with Command + K, using the smbclient to check connectivity I get a "protocol negotiation failed". The same tests from the Mac to a Vista (32-bit) hosts, prompts me to enter password and then view the available shares. Does anyone have any insight on any differences between how Vista and Windows7 handles SMB file sharing? Some blog posts suggest changing how LAN Man handles NTLM responses or changing the 128-bit encryption requirements but neither changes have helped. Thanks.