I upgraded to 1.12, using Chrome, Safari, Opera and Firefox the body overlaps the sidebars on all sites, the header is behind the slideshow and the logo sits on top of the slideshow.
I cant believe that this version was released, its not a good sign.
I was just about to purchase the pro version but now ..... I dont think so.
FYI - Buddypress v1.7 is out soon and it will work with any WordPress theme