in the prosilver style there is a minor bug at the logo in IE 6-7-8

IE ads a button margin to the logo leaving a gab aboute 10px under the logo in the header...

the gab comes from the
p

{ line-height: 1.3em; font-size: 1.1em; margin-bottom: 1.5em; }

that the logo somehow inherit

The solution is simple... Adding
#site-description p

{ margin: 0; }

to the tweaks.css remove the gab