[SOLVED] Images and Captions produce Text Wrap issue in Internet Explorer only

Hello. I have recently experimented with some caption options and I have an issue with the way text wraps in my post, but so far it only plagues Internet Explorer.

In my blog posts I have the photos set to insert at 640 px wide - the width of the center area. Somehow it seems the captions do not fill the entire width - they stop short by about 20 px at the right. That is one issue. The second issue is that in IE the text wraps strangely at right, on top of the photo. See screenshot attached.

I believe that if I got the caption box behaving correctly and occupying 640px that this might solve my issue - but in the settings I'm not sure I can specify caption width (assumed it was automatic).

this is the live site:
http://iam.strongandfree.ca/blog/tra...-in-costa-rica

Thanks for any help.
Mike