Sociable IE visualization problem

Hi im using WP2.7, 2 days ago i have installed sociable plugin, to manage my favourite Bookmarks.
Usually i use Firefox (3.0 version) without any visualizzation problem, but when i use IE (7 version i did’t try other version) the bookmarks icons are not arranged in only 1 row, but in a strange rows and column disposition like that:
[X] [X] [X] [X] [X]
[X] [X] [X] [X] [X]
[X] [X] [X] [X] [X]

I put the “custom position” code inside <div class=”bookmarks”> that i is well placed at center-bottom of any posts.

For now i solved this problem changing Class= whith ID= but i don’think is the correct way.
Any idea?
how can i fix this problem?
here is the blog where im using sociable Plugin
Thanks
G.
Thanx