[Zero Tolerance]

Take the span end tag and put it before the TD ends, however this would cause a scroll bar along the bottom, which i'm guessing you don't want, just want to make my life difficult =P

Here:

<tr>
	<td width="100%" align="left" valign="top">
		<div style='width:100%;'>
			<div style='float:left'>
				<span style='white-space:nowrap;float:left'>[{$Shout['time']}] <b>{$Shout['username']}</b> -- </span>
			</div>
			<div style='float:left'>
				&nbsp;{$Shout['s_shout']}
			</div>
		</div>
	</td>
</tr>

@ kwopper - Reinstall the welcome panel and the shoutbox should then be ontop, for now, i'll make a direct option to place 'exactly' above the forums to resolve this for future versions

- Zero Tolerance