2006-07-18  Brian Cameron  <brian.cameron@sun.com>

        * gui/gdmlogin.c, gui/greeter/greeter.c: This patch attempts
          to fix the problem by turning on io channel's internal
          buffering feature, searching for the start of the next
          message in the read in bytes and seeking backward to the
          byte before the start of the next message.   We then
          process only one message and return, picking up the next
          message next iteration of the main loop.  Patch provided
          by Ray Strode <rstrode@redhat.com>.