[Resolvido] Pau no IE

Fiz um menu em CSS e pegou de boa no Firefox, mas ai pra variar né, no IE ficou bugado. Alguém pode me dizer como arrumar isso?

Repare nas imagens, o problema é que no IE Link tem um "espaço fantasma", ou seja, fica sobrando um teco.

CSS

#menu {
 width: 200px;
 height: 100px;
 float: left;
 margin-right: 10px;
 }

 #menu_list {
 margin-left:5px;
 }

 #menu_list li {
 border-top: 1px solid #226000;
 }

 #menu_list_end {
 border-bottom: 1px solid #226000;
 }

 #menu_list li a:link{
 font: 18px Arial;
 color: #226000;
 text-decoration: none;
 display:block;
 }

 #menu_list li a:visited{
 font: 18px Arial;
 color: #226000;
 text-decoration: none;
 display:block;
 }

 #menu_list li a:active{
 font: 18px Arial;
 color: #226000;
 text-decoration: none;
 display:block;
 }

 #menu_list li a:hover{
 font: 18px Arial;
 color: #226000;
 text-decoration: none;
 background: #e3ffea;
 display:block;
 }

HTML

<div id="menu">
 <ul id="menu_list">
 <li><a href="#">A Empresa</a></li>
 <li><a href="#">Nossos Projetos</a></li>
 <li><a href="#">Parcerias</a></li>
 <li id="menu_list_end"><a href="#">Membros</a></li>
 </ul>

Imagens:

/applications/core/interface/imageproxy/imageproxy.php?img=http://img384.imageshack.us/img384/2358/83931520.jpg&key=8bd832f78610713cd5b79aa997c2afcb8b0a5b91bde67c8cf2552973bdaa9fd6" alt="Imagem Postada" /> /applications/core/interface/imageproxy/imageproxy.php?img=http://img384.imageshack.us/img384/83931520.jpg/1/w240.png&key=b2d47312a105bb07a7639c2fdfb3be8802e4dd1264d1ef0d134755d6b251c299" alt="Imagem Postada" />

Firefox (Certo) /\

/applications/core/interface/imageproxy/imageproxy.php?img=http://img381.imageshack.us/img381/6108/92256549.jpg&key=be3fea10336be840ff2cb856e089727a5ea36add341b2f1d78e3d20bb919d04f" alt="Imagem Postada" /> /applications/core/interface/imageproxy/imageproxy.php?img=http://img381.imageshack.us/img381/92256549.jpg/1/w362.png&key=649492355fe9b91380bcc1309a801f91773806b51c6a07a67ea776a3e36dc8e9" alt="Imagem Postada" />

IE (Errado) /\