Qual é minha questão:
O meu forum tem um espaço entre cada post feito pelo post dos usuarios , eu não sei se é uma imagem ou apenas uma core. Desconfio que seja uma imagem. 
A este é o problema: 



Deixo aqui tambem o meu css para verem se é para retirar algo.

Código:

 
.dterm {
position: relative !important;
left: 25px !important;
}








blockquote {
background: #ebeadd url(http://2img.net/i/fa/prosilver/quote.gif) 6px 8px no-repeat;
border: 1px solid #DBDBCE;
font-size: .95em;
margin: 1em 1px 1em 25px;
overflow: hidden;
padding: 5px;
}




.table-title, .table-title h2 {
border-left-width: 0;
color: #fff;
font-family: arial,helvetica,sans-serif,Verdana,Arial,Helvetica,sans-serif;
font-size: 10px !important;
line-height: 1em;
margin: 2px 0 4px;
padding-bottom: 2px;
padding-top: 2px;
text-transform: uppercase;
font-weight: 500 !important;
}
li > a.mainmenu[href="/search"] { display : none; }
li > a.mainmenu[href="/calendar"] { display : none; }
li > a.mainmenu[href="/faq"] { display : none; }
li > a.mainmenu[href="/groups"] { display : none; }








/* Fancybox by Baivong */
.fancybox-tmp iframe,.fancybox-tmp object{vertical-align:top;margin:0;padding:0}
.fancybox-wrap{position:absolute;top:0;left:0;z-index:1002}
.fancybox-outer{background:#f9f9f9;color:#444;text-shadow:none;-webkit-border-radius:4px;-moz-border-radius:4px;border-radius:4px;margin:0;padding:0}
.fancybox-opened{z-index:1003}
.fancybox-opened .fancybox-outer{-webkit-box-shadow:0 10px 25px rgba(0,0,0,0.5);-moz-box-shadow:0 10px 25px rgba(0,0,0,0.5);box-shadow:0 10px 25px rgba(0,0,0,0.5)}
.fancybox-inner{width:100%;height:100%;position:relative;outline:none;overflow:hidden;margin:0;padding:0}
.fancybox-error{color:#444;font:14px/20px "Helvetica Neue",Helvetica,Arial,sans-serif;margin:0;padding:10px}
.fancybox-image,.fancybox-iframe{display:block;width:100%;height:100%;border:0;vertical-align:top;margin:0;padding:0}
.fancybox-image{max-width:100%;max-height:100%}
#fancybox-loading{position:fixed;top:50%;left:50%;margin-top:-21px;margin-left:-21px;width:42px;height:42px;background:url(http://i48.servimg.com/u/f48/16/58/89/73/fancyb10.gif);opacity:0.8;cursor:pointer;z-index:1010}
.fancybox-close,.fancybox-prev span,.fancybox-next span{background-image:url(http://i48.servimg.com/u/f48/16/58/89/73/fancyb10.png)}
.fancybox-close{position:absolute;top:-18px;right:-18px;width:36px;height:36px;cursor:pointer;z-index:1004}
.fancybox-tmp{position:absolute;top:-9999px;left:-9999px;overflow:visible;visibility:hidden;padding:0}
#fancybox-overlay{position:absolute;top:0;left:0;overflow:hidden;display:none;z-index: 999;background:#000}
.fancybox-title{display:none}
.fancybox-title-float-wrap{position:absolute;bottom:0;right:50%;margin-bottom:-35px;z-index: 999;text-align:center}
.fancybox-title-float-wrap .child{display:inline-block;margin-right:-100%;background:rgba(0,0,0,0.8);-webkit-border-radius:15px;-moz-border-radius:15px;border-radius:15px;text-shadow:0 1px 2px #222;color:#FFF;font-weight:700;line-height:24px;white-space:nowrap;padding:2px 20px}
.fancybox-title-outside-wrap{position:relative;margin-top:10px;color:#fff}
.fancybox-title-inside-wrap{margin-top:10px}
.fancybox-title-over-wrap{position:absolute;bottom:0;left:0;color:#fff;background:rgba(0,0,0,.8);padding:10px}
a.cgu-buttons,button.button2,input.button1,input.button2{background-image:url();border:1px solid #DDD;border-radius:2px;color:#666;display:inline;font-family:Arial, Helvetica, sans-serif;font-size:12px;font-weight:400;line-height:17px;margin:0;padding:3px 7px;text-align:center;text-decoration:none}a.button1:hover,a.button2:hover,button.button2:hover,input.button1:hover,input.button2:hover{background-color:#999;background-image:url();border:1px solid #999;border-radius:2px;color:#fff;display:inline;font-family:Arial, Helvetica, sans-serif;font-size:12px;font-weight:400;line-height:17px;margin:0;padding:3px 7px}












/*------------------------------------------------*/
/*-------------[Tamanho do corpo fórum Fórum descrição logo]------------*/
/*------------------------------------------------*/
body#phpbb {
background-color: #eee;
}
headerbar {
padding: 0px;
}
#wrap {
width: 960px;
background: #FFFFFF;
background-color: #fff;
margin: auto;
-webkit-border-radius: 0 0 6px 6px;
-moz-border-radius: 0 0 6px 6px;
border-radius: 0 0 6px 6px;
-webkit-box-shadow: 0 1px 2px rgba(0,0,0,.15);
-moz-box-shadow: 0 1px 2px rgba(0,0,0,.15);
box-shadow: 0 1px 2px rgba(0,0,0,.15);
margin-bottom: 25px !important;
}








.footer-home::before {
content: " FSW & FORUMEIROS ";
display: block;
  margin-top: 40px;
}
#logo-desc{width: 970px !important;
height: 300px !important;
background: transparent url("http://i.imgur.com/HMdAsr1.jpg") center center no-repeat;
#site-title h1 {display: none;}
#site-title, #site-title h1{display: none;}
#logo-desc p {display: none;}
/*------------------------------------------------*/
/*-------------[Barra de navegaçao]------------*/
/*------------------------------------------------*/
ul.navlinks {
border-bottom: 1px solid transparent;
box-shadow: 0 1px 3px rgba(0,0,0,0.25),inset 0 -1px 0 rgba(0,0,0,0.1);
font-weight: 700;
height: 40px;
left: 0;
position: fixed;
right: 0;
text-align: center;
top: 0;
z-index: 999;
background-image: url(http://i.imgur.com/AOkgY.png);
}
ul.linklist li {
line-height: 40px;
}
ul.linklist.navlinks li a{padding: 15px 10px 15px 10px;color: #bfbfbf;}
ul.linklist.navlinks li a:hover{background: rgba(255, 255, 255, 0.05);color: #ffffff;}
/*------------------------------------------------*/
/*-------------[Panel Foros]------------*/
/*------------------------------------------------*/
.panel {
background-color: #f5f5f5;
border: 1px solid rgba(0, 0, 0, 0.05);
border-radius: 4px;
}
.row {
border-bottom: 1px solid #FFF!important;
border-top: 1px solid #CCC!important;
position: relative;
background: rgb(255, 255, 255) url(http://i.imgur.com/PtFzv.png) repeat-x left bottom;
}
.forabg {
background-color: #333333;
background-image: url(http://i.imgur.com/AOkgY.png);
background-position: 0 0;
border-left: 1px #ddd solid;
border-right: 1px #ddd solid;
padding: 0;
box-shadow: 0px 0px 15px #ccc;
border-radius: 4px;
}
.row1 {
border-bottom: 1px solid #FFF!important;
border-top: 1px solid #CCC!important;
position: relative;
background: rgb(255, 255, 255) url(http://i.imgur.com/PtFzv.png) repeat-x left bottom;}
.row2 {
border-bottom: 1px solid #FFF!important;
border-top: 1px solid #CCC!important;
position: relative;
background: rgb(255, 255, 255) url(http://i.imgur.com/PtFzv.png) repeat-x left bottom;}
/*------------------------------------------------*/
/*-------------[Foros cat Portal]------------*/
/*------------------------------------------------*/
.forumbg {
background-color: #333;
background-image: url(http://i.imgur.com/AOkgY.png);
background-position: 0 0;
border-left: 1px #ddd solid;
border-radius: 4px;
border-right: 1px #ddd solid;
box-shadow: 0 0 15px #ccc;
padding: 0;
}








.post {
background: #eee;
border-bottom: 1px solid #ccc;
box-shadow: 0px 0px 8px #ddd inset;
}
.post span.corners-top {
height: 29px;
background: #222;
padding: 6px 15px;
}
.module {
border-radius: 4px;
background: #eee;
border: 1px solid #ccc;
box-shadow: 0 0 5px #ccc;
}
.module span.corners-top{height: 29px;
background: #333 url(http://i.imgur.com/AOkgY.png)repeat-x;
}
.table-title, .table-title h2 {
display: inline;
color: #FFF !important;
font-family: 'Arvo', Helvetica Neue, Helvetica, Arial, Verdana;
font-size: 1.1em;
font-weight: 700;
}
/*------------------------------------------------*/
/*-------------[search incorporado con algunos codigos importantes]------------*/
/*------------------------------------------------*/








#search-box {
background: url(http://i.imgur.com/d6Rki.png) no-repeat;
display: inline;
height: 37px;
margin-top: -50!important;
}








#search-box #keywords {
width: 130px;
background: transparent;
color: #6C6C6D;margin-left: 15px;
font-family: Verdana;margin-top:5px;
font-style: normal;
font-size: 12px;}




#search-box input {
border: none !important;
background: none;}








#search-box input.search {
background: none;
margin-left: 0px;
margin-top: 0;}








#search-box input.button2 {visibility: hidden;
}








#search_menu { 
background: #ffffff;
font-size: 11px !important;
position: relative; 
width: 350px; 
top: 60px!important; 
left: 300px!important;
}
#search_menu a{color:#000!important;}




.conteneur_container_IE{position: relative;bottom: -3px;margin-top: -2px;padding: 1px;}




/*------------------------------------------------*/
/*-------------[Borrar el subrayado de los enlaces]------------*/
/*------------------------------------------------*/
a {text-decoration: none;}
a:link {text-decoration: none;}
a:hover {text-decoration: none!important;}
a.forumtitle {text-decoration: none;}
a.forumtitle:hover {text-decoration: none!important;}
a.topictitle {text-decoration: none;}
a.topictitle:hover {text-decoration: none!important;}




/*------------------------------------------------*/
/*-------------[Perfil Post]------------*/
/*------------------------------------------------*/








.postprofile {
 border: 2px solid #DEDEDE !important;
 background: #DEDEDE !important; 
 border-radius: 5px 5px 5px 5px !important; 
}
  
.postprofile {
text-align: center;
}
  
.postprofile {
background-color: #DEDEDE;
}
  
/*------------------------------------------------*/
/*-------------[Botones]------------*/
/*------------------------------------------------*/
input.button1, input.button2, button.button2, #main-content a.cgu-buttons {
background: #f4f5f4 url(http://i66.servimg.com/u/f66/11/96/49/61/tabbg10.png);
-moz-border-radius: 3px;
-webkit-border-radius: 3px;
border-radius: 3px;
padding: 2px;}








/*------------------------------------------------*/
/*-------------[agre codigos para solucionar errores & aportes importantes no borres nada]------------*/
/*------------------------------------------------*/
#plus_menu {
background: #ffffff;
}
.user_login_form input[type="text"], .user_login_form input[type="password"]{
position:relative;
top:7px;
}
.postbody .topic-title {
font-size:1.2em;}
p.path {
background: #222 url(http://i.imgur.com/DkHoj.png) bottom repeat-x;
border: 1px solid #000;
border-top-left-radius: 5px;
border-top-right-radius: 5px;
clear: left;
color: #DDD;
margin-left: 15px;
padding: 8px;
position: absolute;
top: 265px;
width: 915px;
box-shadow: rgba(0,0,0,0.3) 0px 1px 4px, inset #555 0px 1px 0px;
}
p.path a{color:#fff!important;}
.pathname-box {
background: #222 url(http://i.imgur.com/DkHoj.png) bottom repeat-x;
border: 1px solid #000;
border-top-left-radius: 5px;
border-top-right-radius: 5px;
clear: left;
color: #DDD;
margin-left: 15px;
padding: 8px;
position: absolute;
top: 265px;
width: 915px;
box-shadow: rgba(0,0,0,0.3) 0px 1px 4px, inset #555 0px 1px 0px;
}
.pathname-box a{color:#fff!important;}
.postbody {
clear: both;
color: #7d7d7d;
float: right;
line-height: 1.48em;
padding: 7px;
width: 75%;
background: #fff;
border: 1px solid #ddd;
border-radius: 6px;
margin-top: 5px;
}
.topic-actions {
font-size: 1.1em;
height: auto;
background-color: #f5f5f5;
padding: 10px;
border-bottom-left-radius: 4px;
border-bottom-right-radius: 4px;
margin: 0px;
}
h1.page-title {
font-family: Verdana,Arial,Helvetica,sans-serif;
font-size: 2em;
font-weight: 400;
background-color: #f5f5f5;
border-bottom: 1px dotted #ddd;
padding: 10px;
border-top-left-radius: 4px;
border-top-right-radius: 4px;
margin: 0px;
}
h1.page-title a{color: #333 !important;}
blockquote cite {
display: block;
font-style: normal;
font-weight: 700;
border-bottom: 1px dashed rgba(0,0,0,.2);
padding: 3px 5px;
margin-left: -15px;
font-size: 12px;
}
blockquote {
margin: 1em 1px 1em 25px;
overflow: hidden;
background-color: #fefbf3;
padding: 9px;
border: 1px solid rgba(0,0,0,.2);
-webkit-box-shadow: 0 1px 2px rgba(0,0,0,.1);
-moz-box-shadow: 0 1px 2px rgba(0,0,0,.1);
box-shadow: 0 1px 2px rgba(0,0,0,.1);
font-family: Verdana;
font-size: 12px;
line-height: 1.5em;
border-radius: 6px;
}
.content blockquote {
color: #333;
}

Endereço do meu fórum:
http://fswrestling.foruns.com.pt

Versão do fórum:
PHPBB3

Olá!

Você deseja retira-la? se for, adicione isto na sua "Folha de Estilos CSS":

Código:

.corners-top, .inner .corners-top {
display: none !important;
}

Se não for isto, seja mais descritivo.

Até mais.

Sim desejo retirar, porem não resultou.

Olá!

Procure por isto na sua CSS:

Código:

.post span.corners-top {
height: 29px;
background: #222;
padding: 6px 15px;
}

Troque por isso:

Código:

.post span.corners-top {
display: none !important;
}

Até mais.

Obrigado pela ajuda, assunto resolvido.