Theme is good for firefox, but not for IE. Look at the screen: The picture filenames and extensions are all lowercase. FIXED.
Let`s take this your your source code: <div class="previouspost"> <h3>Best Deal Ads :</h3> <div align="center"> <img src="http://www.thehemorrhoidrelief.info/wp-content/themes/ads-minded/adsmindedwide/dummy_ads/300x250_img.jpg" alt=""> </div> </div> Code (markup): Now, if we want to see the image http://www.thehemorrhoidrelief.info...inded/adsmindedwide/dummy_ads/300x250_img.jpg in the browser you will see that it returns a 404 error. Firefox hides images that cannot find, IE will return them as blank with X on it. All you have to do is to check that they have the right address and they will work. If you cannot manage to fix the problem you can drop me a PM at any time and I'll help you out.
Sometimes the easiest solutions are hardest to see. That's why its good to have two pairs of eyes to look at the picture. It shows I didn't even have the dummy_ads folder, so I erased the the code where these images were called. I fixed the remaining blanks, and everything works good now! Rep+ for you!