Thanks for your time.
I'm using Firefox at the moment as it was Chrome which began exhibiting the problem. Yes I have cleared Cache. Will attempt another browser now to see if alleviates the problem however I'm not convinced its the browser, as the ability to type hangs during a round. As I mentioned in the opening post, this only started after purchasing the WGT Notepad so it is the most likely candidate and it may have fouled up the registry. Unfortunately for me I cannot see a way to get rid of it.
Have since discovered a workaround in that I am able to copy and paste from notepad, which is a bit of an onerous way of doing things but at least it works for me.