I figured it out.. but it isn't because of tbopen and close, it is a conflict with the menubar class. For example, here is my .menubar settings:
.menubar{ <br />background-color: #336699; <br />border-color: #C0CAE2 #24278E #24278E #C0CAE2; <br />border-style: solid; <br />border-width: 1px; <br />color: #ffffff; <br />font-size: 11px; <br />font-weight: normal; <br />}Now.. notice the border-color, this makes the left and top borders the light color, and the bottom and right dark, to produce the 3D effect you can see in that image I attached above, look at the threads menubar and you see how it works.
The problem is, it seems as if the class=menubar is being called twice in the photopost menu, the first one makes the whole box look like it should, as you can see. But then it looks like this class is also being called for the table that holds the nav links.
So if people aren't using this CSS effect, it looks fine, so that's why it probably hasn't been noticed before

I don't know if this is something you want to address, as it probably affects only myself right now, but if not, could you point me to the right file(s) to try and change this? Would be appreciated

Thanks!