A strange black line (nearly 3/4 inch) has appeared out of nowhere on the right side of certain Topic threads. This only appears when in the latest version of IE for the Mac. It isn't visible on the PC...! What do you suppose that is? I can give you the link if it helps...
The borders around the tables are created by overlaying a table over the top of a table with a black background, and sizing the top table to be a pixel smaller.
There is probably some kind of width rendering issue with the Mac browser that is shrinking the top table rh size for some reason. Just guessing here.