I have this weird problem that Firefox does not open a perfectly normal select box (see code below). I've already tried to disable all the plugins, themes etc, but still it won't open them. Is there probably some strange setting that causes this?
<html>
<body>
<select>
<option value="0">aaaaaaaaaaa</option>
<option value="1">bbbbbbbbbbbbb</option>
<option value="2">cccccccccccc</option>
<option value="3">dddddddddddd</option>
</select>
</body>
</html>