Thanks for the feedback fella's, we certainly get our share of bright fireballs etc up here.
I fact I had a nearby neighbour describe an experience to me this afternoon, that happened to her a month or so ago, that can only be explained by ball lightning !
Slow moving intense ball of light, that drifted off and disipated, giving an electrically "charged" experience.
Gee ... I will have to start my own website ... unexplained phenomina in the NT