Thats a tough one.
I would suspect if you are using a secondary css in addition to the default ubb css for the style used then you have some conflict.
Since they both use similar class names.
You might need to just turn off one class at a time on the eric meyer css and see if you have any improvement.
For starters just delete the eric css just to see if the problem persists.
Could just simply be something in the ubb style.
