Don't know about any debug. However, Serendipity has played a part. I asked to do a check on the Internet. It told me all was working OK, then it asked me if I wanted to do a manual set up, I thought I might as well have a look. Just then I got called to do something away from the computer. When I came back 10/15 mins later. It told me that I needed to restart the computer. I did that and since then it is all working fine. Hmmm! Not sure about anything.