[dartho]

Just tested on a vanilla 3.7 B3 and works as expected.

Havikng a look at your site, I see that you have the infobar.css declaration as well as teh contents of the infobar.css in your regular style css (clientscript/vbulletin_css/style-d6c0460d-00215.css). I suggest you only have it declared a single time - try editing the the "Add Infobar" plugin and commenting out the 2 occurrences of

$StrTmp = '<!-- ADDINFO BAR PLUGIN -->\n<link rel=\"stylesheet\" href=\"infobar.css\" type=\"text/css\" />\n<!-- END ADDINFO BAR PLUGIN -->\n';
$vbulletin->templatecache['headinclude'] = $StrTmp . $vbulletin->templatecache['headinclude'];

Then the CSS should only be declared once