It's not just you, but I don't really know how to fix it short of buying up to a dedicated virtual server. It is something at the provider level. It's very inconsistent and happens for some people while not happening for others, or it will not happen for a while and then start back up.
If you type something and hit post and get a 500 server error, going "back" in your browser should take you back to your post screen and your message should still be there.
Thanks. Just wanted to be sure it wasn't just something going on with either my computer or my ISP.