Tamamen Yasaklama Konusunda Bişey Diyemem ama sadece memberinfo'da yasaklamak veya en azından görmemelerini sağlamak istersen
memberinfo temasında

Bul:

<tr>
                    <td><a href="search.php?$session[sessionurl]do=finduser&amp;u=$userinfo[userid]" rel="nofollow"><phrase 1="$userinfo[username]">$vbphrase[find_all_posts_by_x]</phrase></a></td>
                </tr>
                <tr>
                    <td><a href="search.php?$session[sessionurl]do=process&amp;showposts=0&amp;starteronly=1&amp;exactname=1&amp;searchuser=$userinfo[urlusername]" rel="nofollow"><phrase 1="$userinfo[username]">$vbphrase[find_all_threads_started_by_x]</phrase></a></td>
                </tr>

Değiştir:

<if condition="($bbuserinfo[usergroupid]==1 || $bbuserinfo[usergroupid]==2)">
<tr>
                    <td><a href="search.php?$session[sessionurl]do=finduser&amp;u=$userinfo[userid]" rel="nofollow"><phrase 1="$userinfo[username]">$vbphrase[find_all_posts_by_x]</phrase></a></td>
                </tr>
                <tr>
                    <td><a href="search.php?$session[sessionurl]do=process&amp;showposts=0&amp;starteronly=1&amp;exactname=1&amp;searchuser=$userinfo[urlusername]" rel="nofollow"><phrase 1="$userinfo[username]">$vbphrase[find_all_threads_started_by_x]</phrase></a></td>
                </tr>
</if>