It seems some of you are having trouble posting. I'll look into this. It could be something to do with the connectivity of the browser you're using. I downloaded the netscape browser which is great and has full connectivity with the blogger site. You might like to try that.. plus it's a great browser.
STOP PRESS - Hopefully the problem is now fixed and you won't have to change your browser. Just click on the title of the post and then on "leave comment". It should all work.