Jeff, looks like you have fixed this the right way now, pushing the
tables down to per-post was exactly what was need,
outstanding!
In fact, if anything, this combination of fixes now looks even better
than the old pre-upgrade openacs.org Forums behavior, which you can
see by looking at the problematic poorly-formatted 12th post above -
not only does it no longer screw up the display of the rest of the
thread, but at least in Mozilla-derived browsers, it itself is now
much more readable. (In IE 6.0.x, the text at the top of the 12th
post is still too wide, but that's the fault of the way that user
submitted that post; it is not a Forums bug. All the other posts look
look good in IE.)
So, thank you very much, Jeff! (Hopefully this bug has now been
finally slain for good, and won't come back again.)