Hi Peter Ashford,
Thanks for fixing the login access. I am now able to access to your Joomla backend.
Anyway, regarding your issue, I've updated your auto truncation settings so that it no longer show all the images from a blog post in the listing page. I still not too sure why this is happening but we will keep our eyes to this matter and see if anyone else encounter the same issue or not.
Also, in EasyBlog 5.1, we actually changed the post cover behaviour so that, the 1st image from a blog post will be displayed as 'cover' photo, hence you are seeing one big image. You may adjust the cover photo size at your EasyBlog backend under Settings -> layout -> Post Cover and look for the width option. Currently I've set it to display as full width (with the crop option enabled) which i think the cover photos now display very nice on your site. Please see
http://take.ms/bKV7b
http://take.ms/rwRRc
Hope this help and have a nice day