ie7 theme niggles

As usual with ie7 (and of course totally forgiveable!) some niggles with the theme.

In blocks using the 30x35px images (e.g. most active groups) the description is falling below the image. Can't quite see why unless a minimum width needs setting on the li.

Also in the group directory, the request/join element falls below the horizontal rule of the next group. I think I'm going to try and move this to the top right anyway, like the featured group block which seems more intuitive.