Not so long ago, the cwd functionality was removed from tmux. http://marc.info/?l=openbsd-misc&m=138270549910047&w=2
With the current i386 snapshot, tmux behaves as follows: Opening a new window with prefix-c in xterm creates a new window and starts a shell in $HOME Opening a new window with prefix-c on the console creates a new window and starts a shell in the current directory. Is that intended? Jan