So I watched at least one episode of this, but I can only remember one story and even then not the whole thing. It was set on a spaceship, and from what I remember it was fairly dark (lighting wise, not mood wise).
I think that the story I remember, there is something happening, and they have to stop it. There is a guy with glasses who might be melting? I think that the main characters were a girl and two guys. Girl had blonde hair in a ponytail? She ends up the last person conscious and manages to stop whatever is happening, and reverse the melting.
I think that I watched this in 2004/5 on UK early morning tv. Not sure if it was meant for kids but I think so.