I have themed my site using a contributed theme — AD Blueprint — which works well in Firefox. But within IE7, the site header and slogan text is displaced, so that it overlaps the logo by about 10px.

I have used a logo sized 45px height, but in trying to debug the error, I noticed that the same effect happens when viewing the vanilla installation of AD Blueprint, whenever the logo is selected within the theme settings.

(I've tried un-checking 'logo' from global settings and having it set only within the ADB theme settings, but this doesn't fix it. My development site can be viewed here or a screenview can be seen here

I've informed the theme developers of the issue (http://drupal.org/node/293175) but have not received a reply for two weeks.

I am css literate, but not familiar with IE7 hacks.

Can anyone assist me in debugging this incompatability? Thank you.