Hopefully I may have sorted it, RT funny you should mention an optical mouse as that's what I did use but stated having probs with it, so I plugged in the one I am using now,
When I was looking into which drivers were being used I found that it was listing the old optical mouse, so I un-installed that and fingers crossed it appears ok now,
I do agree the optical is much better and I will get a new one,
So many thanks guys it looks like it was a driver prob.
Nick.