I thought I could sit back and relax while Blogger fixed the recent comments problem of displaying older comments. I was oh so wrong. The search was on. I finally found a way to correct it while the Blogger folk sit back and continue relaxing.
First off, don't worry about it if you are not using Han's recent comment widget. But, if you are not, I would hurry on over there and get it. Anyway, the fix came from Anakbrunei.
Open your dashboard/ Template/ Page Elements. Then click on 'edit' in your recent comment page element. Look until you locate this little part in the text.
http://yourblog.blogspot.comYou will add the text in red. All is better now!
Update 3/5/07: Thanks to x_piove, there is a fix for the missing most recent comment. Change start-index=2 to start-index=1