For some reason, any widgets I insert below the Top Commentators widget end up being broken out of the sidebar, to the left-hand side of the website (into the blog post). The widgets above it are fine. If you're using IE as your browser, you can have a look at my website to see what I'm talking about: http://www.mcalcio.com .
Reading the posts relating to the Top Commentators plug-in in this forum, it seems this has to do with my CSS stylesheet. I read the resolved post http://wordpress.org/support/topic/122634? and tried applying the solution, but it seems my sheet.css file doesn't contain those lines of codes. I'm using the default Kubrick WordPress theme by the way.
On a sidenote, the sidebar and the plug-in display perfectly fine in Mozilla Firefox, so the problem seems to be isolated to IE.
Here's my style.css file. http://wordpress.pastebin.ca/641348
Any help would be greatly appreciated.