minor changes

darcs-hash:20081126171935-b2873-e6e49832b77b6b6d3936b0ccbf1943d35edf7f72
changed hotkey for switching sessions from ctrl-s to ctrl-n

darcs-hash:20081127071315-b2873-f05d5de1d8480b0093386dbe7bd2316ba60ae1a0