Dont know if this is just isloated or has happened to others. But I have gotten a couple PM's without notification emails.
Out of say mabey 10-15 PM's, I have had about 2-3 without emails, probably in the pas couple weeks. Not specific to any time frame. So its not common, and not a problem, as I get the popup as soon as I enter the site. But just thought I would toss this out there.

There are more pressing issues right now, but I figured I would post this when it was on my mind. I know you wanted to be aware of any glitches or issues with the site.