Right Column Formatting Problem

Can anyone tell me why everything in my right column (in IE only, not FF) is center justified? All the post titles, comment links, etc. used to be left justified and that’s how I want them. Now they’re all mysteriously centered.

Anyone know what I may have done, or better yet how to fix it?

I did make a couple of the individual graphics centered with a <center> within the widget, but that shouldn’t effect the whole column should it?

Thanks for any help.