Ah yes, thanks for that.. I've found a javascript function that for some reason makes png images crop instead of resize in IE. hopefully i'll be able to fix it.. possibly just by removing it!
I did have some problems when trying to track down the bug on my local copy of the site. I'm using XAMPP on Windows 7, with my site homepage at
localhost/joomla-stagdev/ ... but for some reason the social networking images don't display at all unless i have the absolute reference in, eg '
localhost/joomla-stagdev/components/com_.../images/facebook.png' instead of 'components/com_biblestudy/images/facebook.png'
Any idea whether this is something to do with my setup, or if it's a problem others have had?