My web server was crashing constantly, so I had to migrate to a new one.  After the migration, everything seemed to work fine on my site when I was testing it from the server itself.  However, I noticed now that many (if not all) of the ajax features do not work when I access the site from another machine.  For example, I can't add a status update, comment, picture to the journal.  When I try to send someone a message or friend request, the box pops up, but it is empty.

My site is running in Full Trust mode.  It seems like I've got some sort of permission error, but I can't figure out what.  Ajax seems to work fine in other modules on my site.

Are you getting any javascript errors in the browser?