I have installed the Boldy theme from site5 on one of my projects and have run into one major problem.
When browsing in internet explorer (8 or lower), the top dropdown menu gets displayed behind some other elements (main content slider, H1's etc.). I've tried everything from changing all the z-index's to fixed positions, with no luck.
You can view the problem by visiting site5's Boldy demo page http://wordpress.site5.net/boldy/ and hovering over the top menu's blog tab in IE.
I have asked site5 to look into it, they are aware of the problem, but have failed to find any solutions.