Thanks very much for that.
Perhaps it is all the equipment causing the behaviour, obviously though its not causing the pc to slow, so that should be the main thing.
Also we have a sub and speakers plugged into the pc, so thats more gadgets.
In fact, hubby is a bit of an av freak and a mound of cables behind the plasma.....its a wonder really where i get my eratic behaviour from...LOL..all these radio,micro and whatever other waves are flying around...
Thanks again..