[BRotondi]

@Scan Cape Cod: Disable other AddOns and Extensions. This is not caused by vbMediaWiki alone. Finding a solution is easier if you see what caused it.

@St0rmNet: Logo has been cut of in the skin "vbMediaWiki". Search for

    <script type="<?php $this->text('jsmimetype') ?>"> if (window.isMSIE55) fixalpha(); </script>

in "vbMediaWiki.php" and paste the following lines (from "MonoBook.php") before:

    <div class="portlet" id="p-logo">
        <a style="background-image: url(<?php $this->text('logopath') ?>);" <?php
            ?>href="<?php echo htmlspecialchars($this->data['nav_urls']['mainpage']['href'])?>"<?php
            echo $skin->tooltipAndAccesskey('p-logo') ?>></a>
    </div>

This is not all the solution, but gives you a first step... Poste the solution when finished!

Greetings and good success!
Bruno