I'm running OS X 10.3.9/Samba 3.0.10. When I try to connect to my Windows 2000 machine from my user account, I enter the correct workgroup/user/password and then get the message 'The Finder cannot complete the operation because some data in "smb://machinename" could not be read or written. (Error code -36).' (Error code -36 in OS X is "i/O error (bummers)".) I can connect fine to the Windows machine with the same workgroup/user/password from another user account on the same OS X machine. From both user accounts, the Windows machine shows up when I run smbtree. When attempting the connection, I get the following in console.log: mount_smbfs: session setup phase failed: syserr = Permission denied mount_smbfs: could not login to server MACHINENAME: syserr = Permission denied mount_smbfs: session setup phase failed: syserr = Socket is not connected mount_smbfs: could not login to server MACHINENAME: syserr = Socket is not connected The first two lines show up in the log when the SMB/CIFS Filesystem Authentication window first pops up, before I've even typed anything. The second two lines show up after I click OK in the authentication dialog. I used svn to get the source from the SAMBA_3_0_RELEASE branch, but couldn't find the string "session setup phase failed" in any of the files. I'm not really sure where to go next in troubleshooting. I'd certainly appreciate any tips.