[benFF]

If I may make so bold, I'd use the following replacement in the postbit template (this will stop the sig showing if the user has them turned off in their control panel)

		<if condition="$post['signature']">
		<!-- sig -->
		<div>
			__________________<br />
			$post[signature]
		</div>
		<!-- / sig -->
		<else />
			<if condition="($bbuserinfo['options'] & 1 || $bbuserinfo['userid'] == 0)">
				$scr_nosig
			</if>
		</if>