Okay, thank you for your input but it seems you are not experiencing the issue I am experiencing, so if anyone else can help me or has had the same issue I would like to hear from them.
never happened to me either, until I updated wordpress, do you use Notepad? I use Notepad2 and it does not happen, but my clients use Notepad, just wondering if anyone else has had this occur recently.
Thanks. Yes I tried it on a test blog with nothing on it (no plugins) using both the twenty ten and twenty eleven themes and it still does it. Would be interested to know if anyone else has copied anything from Notepad and tried pasting it into a new post using visual tab and had the same issue.