thanks for your fast reply. I'm not that familiar with CSS only themes. In theory they sound ideal, but in practice may be a different matter. I understand the debate over CSS vs. tables but I'm just not as comfortable with CSS as I am with HTML. I probably should be thinking twice about using a CSS theme, but I thought it would be good for me to learn more about it.
Anyway, I removed the <div id="clear"></div> from all the CBB themes and it is dramatically improved. I still had some problems, so I also removed the style: clear from the breaks as you mentioned. Turns out this was not a good idea because it introduced more errors, so I reverted back to maintaining the break style clear.
Anyway, now it is just minor stuff:
In Firefox:
1. Gap between forum list and "users online" section at category level. Deleting the clear:both from the break or deleting the break all together from the index theme causes the section to move up too far. So either there is a gap or it overlaps. . How can I tweak that break?
Perhaps this will correct when I add several categories:
http://vinolove.com/modules/newbb/
2. Gap again between forum topics and icons at forum level: Same issue with the clearing the break. . maybe I'll just add a lot of forums and see what happens.
http://vinolove.com/modules/newbb/viewforum.php?forum=1
3. Misalignment of Notification Options at thread level:
http://vinolove.com/modules/newbb/viewtopic.php?topic_id=1&forum=1
IE is fine except for the very minor misalignment of the "fast reply" button at the thread level:
http://vinolove.com/modules/newbb/viewtopic.php?topic_id=1&forum=1
How odd that with this it is IE that is functioning "correctly" and Firefox that is making trouble!