Well, I just had a scare. When I tried to upload Lecture Five this morning, after more than an hour of uploading YouTube told me the video had been rejected. I tried again. Another hour. No luck. Then I recreated the video from the Windows MovieMaker files on my laptop and tried a third time. Still no luck, but this time I was told the video had been rejected because it was too long. I was prompted to request a telephone confirmation that I was not Julien Assange [or something], went through the process, and it worked!
Only one trouble. When I recreated the video, I failed to snip off the bit at the beginning where I am hitching up my pants and tightening my belt. Oh well, no one ever said I was a fashion plate.
Anyway, Lecture Five is now available, and I am hard at work on Lecture Six.
p.s. I have a surprise at the beginning of Lecture Six.