Only 1 Post Per Feed Processed + Other Issues when Import Images Active

When I set up feeds WITHOUT the image import add-on the plugin will process all available posts from a feed, but if I activate the import add-on it's only pulling the last post. In addition, once that post is processed it totally jacks up the feed timer and it won't process again until I either process it manually or go to the feed page and save it again.

Any ideas? I tried it on two different domains that are on different servers and got the same result - very frustrating!