I was looking at the version of
Installing OpenOffice 2.4 under Red Hat Enterprise Linux 5.x that is delivered for the LiveJournal feed of this 'blog, and saw that it has a bunch of unmatched closing
p[aragraph] tags that simply aren't in the entry as I marked it up. Indeed, I don't think that I used
p[aragraph] elements at all in that entry.
Looking at the entry that is delivered to visitors to my site, I see
appearing various places that I haven't put them. But they don't appear when I attempt to use the WordPress editor to remove them, nor are they in the entry as it appears in the raw dB. The problem, then, is in the preprocessing by WordPress.
I s'pose that I need to explore the problem and then file a bug report with WordPress.org.