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Many thanks ChuckFickens for your response.
As you say it is just an anomaly that occurs in the system which I cannot do anything about. At least it is not a virus or worse.These PC's are strange beasts and seem to have a mind of their own at times. I am not technically aware enough when it comes to understanding the ins and out of computer programming etc, unlike yourself, VHG, and a few others on here, and I quite often read your posts when helping others as I can pick up a few useful tips.
Free advice and help when it is given is priceless and I think most people on here appreciate that.