No <br> tags were used the html for the table in question. I started at the very top line of the post, and entered this code (I snipped out a few rows here for brevity)
PHP Formatted Code
<table>
<tr><td colspan=
5>CAR</td></tr>
<tr><td>NO.</td><td>DIV</td><td>DRIVER</td><td> CAR</td><td>HOMETOWN</td></tr>
<tr><td>
1</td><td>N</td><td>Brett Butler</td><td>C</td><td>Snellville, GA</td></tr>
<tr><td>
13</td><td>S</td><td>John Gibson</td><td>F</td><td>Statesville, NC</td></tr>
</table>
It is funny, that I enter the same html code here in this reply ( I tested it, then removed it and used the [code] function) and the extra lines are not apparent.
My site was a Geeklog 1.4.1, which was upgraded to 1.5.2 prior to adding the forum software, if that makes any difference. It was using the Professional theme before and after the upgrade as well.