Pictures wrong size after migration from .com to .org

I recently migrated from a .org to .com installation. Things went fairly smoothly except now all of my pictures seem to be full size instead of the size that I originally set them to. Any ideas how to get this back to normal?

You can see what I mean in most of my posts, but this:

https://www.jcopro.net/2011/02/09/glade-sense-and-spray-teardown/

is a good example. All the pics are supposed to display as medium.

Thanks for your help!