Thanks for your comments, much appreciated.
I will run some testings with the "waiting theme". Initially when was working ok, if the printer was on and plugged to the mac when I call the MC use to connect with out needing hitting the connection button, it started to read the extruder and plate temperatures almost like straight away after loading, was very fast. If I don't write back here is because I haven't got any progress.
Hope your guys can tackle this issue, I really liked MC, is a very good, very capable software.