The forum module buttons are vertical instead of horizontal in firefox.  I've noticed that even the forums here are like that.  Has anyone been able to fix that?  Where would the settings for that be?

In case anyone is interested this is fairly straightforward to fix;

The toolbar is made up of a series of anchors containing image tags, each anchor has its own class;

A.Forum_ib_admin:link, A.Forum_ib_admin:visited, A.Forum_ib_admin:active, A.Forum_ib_admin:hover {
 background-image: url(images/ib_admin.png);
 background-repeat: no-repeat;
 background-position: center;
 padding-left: 2px;
 padding-right: 2px;
 padding-top: 8px;
 padding-bottom: 0px;
 height: 35px;
 width: 35px;
 display:table-cell;
}

set;
display:block;
float:left;
height becomes redundant.

A.Forum_ib_admin:link, A.Forum_ib_admin:visited, A.Forum_ib_admin:active, A.Forum_ib_admin:hover
 {
 background-image: url(images/ib_admin.png);
 background-repeat: no-repeat;
 background-position: center;
 padding-left: 2px;
 padding-right: 2px;
 padding-top: 8px;
 padding-bottom: 0px;
 display:block;
 float:left;
 width: 35px;
}
 
Apply these changes to the rest of the anchor classes and you will have a nicely arranged row.
Note; Because Block mode tags do not obey the center rule applied to the containing Table cell the row will be left justifed.
            To indent the row simply apply a margin-left to 'Forum_ib_moderate' .

This is crossbrowser safe approach, tested in IE6 - 7 and Firefox.

Yes not ideal, i clearly didn't test well enough!
Here is a solution that works cross browser and has the added benefit of better accessability. It does however require different markup to be inserted from the codebehind.

<style type="text/css">
.wrap
{
    width:100%;
    text-align:center;
}
ul.list
{ 
    display:inline;
    padding:0;
    margin:auto 0;
}
.list li
{
    display:inline;
    width:auto;
}</style></p>
<div class="wrap">
<ul class="list">
    <li><a href="#"><img alt="" src="logo.gif" /></a></li>
    <li><a href="#"><img alt="" src="Logo.gif" /></a></li>
    <li><a href="#"><img alt="" src="logo.gif" /></a></li>
</ul>
</div>