That is not a free hosted WordPress.com blog. We do not provide support at WordPress.COM for any installs of WordPress.ORG software. We provide support only for free hosted WordPress.COM blogs being hosted right here on this multiuser blogging platform.
WordPress.com and WordPress.org have different log-ins and run different versions of themes with same names.
If you don't have a username account at WordPress.ORG click http://wordpress.org/support/ and register one on the top right hand corner of the page that opens, so you can post to the support forums there and receive advice from WordPress.ORG bloggers.
Hint: You are uploading HUGE images that are widre than the maximum displayed image width in your theme. By analogy you are trying to park a Mac truck and semi-trailer unit in a parking stall for a Vespa motorbike. You need to resize your images prior to uploading them.