I’ve started a thread on the messageboard for bug reports and status updates.
So far we have an alt-text issue in the RSS feed and a crazy LiveJournal feed, both of which are being worked on. Update: Both issues have been resolved. If you’ve got anything new to report, or want to check the status of the known issues, please visit the thread — and I encourage you to browse around and poke in all the corners of the new site. Really break it in and let me know what you find — I want it to be robust. Thanks!