It usually works in Safari if I simply reload the page. First I have a working message center, use it, then when I return later, it is a blank page. Once I reload the page, I can see everything again. That is, until I leave and go back! I guess it is really a minor issue on this end. Sending email is fine, but if you use the link to contact the CO about a specific cache, it takes you to the message center with the reference to the cache already in your message. A nice feature that I'd like to see stay.