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I have submitted two pages that have validated with errors that look good to me. The first page I commented out the closing paragraph tags were it complained that there was no open paragraph tag. The second example I have not changed and it has nested ul tags. http://www.highley-recommended.com/books.html http://www.highley-recommended.com/links.html I can tell the validator has gone through an upgrade as the file, http://www.w3.org/TR/1998/REC-html40-19980424/strict.dtd, was relocated from past runs through the validator.
OK, I have figured out that ul tags are not valid in paragraph tags and the really odd one is nested ul lists. I finally figured out you do not close the preceeding li tag before opening the nested ul tag. The validator never caught these two issues before.