miniFrontPage not showing thumbs when cache enabled

Hi, when I have enabled cache on the core Joomla! 3.0 system the thumbs not showing, although some are showing from the imagecache of mFP .. when I check the image not showing path it has a missing "/" between the images folder the image filename itself. How to solve that problem?

albahrainnews.com

Can you point us which part in that site that images thumbnails don't show up?

Actually it shows most of the times, I tried several browsers and OS's the behavior is the same, when cache is disabled everything is normal through.

The only parts where mFP is used is the banner from under the slider, and the 2 small banners on the left sidebar, as shown in the photo attached the banner with the guy on the right thinking:

ooh when cache is enabled right? we're not sure about that and can't give you a solution for now. We need to take a closer look on it and can;t promise you anything. Anyway, thanks for your report on this issue.