I'm also having trouble with PMs. I messaged a member and can read her reply. I sent a reply to her. I believe she sent me another because it says I have 2 notifications. However, when I go to my inbox it just shows the original reply to my original PM. These replies are all contained in one message thread, they are not all separate messages if that helps any. I have even left the Blab page, closed internet explorer, re-opened IE and came back to Blab to see if that would help.