actually, that image is supposed to be there… its part of theme… not a pleasant background image, but thats what it is in the theme…
the problem is that the theme has some custom js that runs on page load and adds some inline styles to the background to make it display properly… on the forum page, that js is failing with errors…
TypeError: $ is not a function
http://styledinthewild.com/wp-content/themes/theme1658/js/custom.js?ver=1.0
Line 31
I suspect its because the theme is breaking wp standards and incorrectly loading its own version of jquery rather than the version of jquery that comes with wp…
<script type=’text/javascript’ src=’http://styledinthewild.com/wp-content/themes/theme1658/js/jquery-1.6.4.min.js?ver=1.6.4′></script>
see: http://codex.simple-press.com/codex/faq/troubleshooting/what-is-this-jquery-conflict/
so if you fine where in the theme its doing that incorrectly, we can help correct it… likely in the functions.php file…