After upgrade to 2.0 rc3 my Picture links are broken..

[srunyon1]

After upgrade to 2.0 rc3 my Picture links are broken..
Some  not all my images posted on the site are broken..
Were are attached image stored and what might be going on?

[IceXaos]

It may be the same issue as when I converted from phpBB to SMF.  Try going to modify a post & just save it, don't make any changes, and see if the image appears.