Someone was trying to contact me and my message box was full!
 

Sorry about that, I haven't been coming here much since the changes, and I got a spanking ("Serious Infraction") for having something about "check my blog in my signature line. Looks like there was also a change in how many messages we can have, because the maximum was below the number I had. I've emptied the box. I'll also try to be better about checking my message box here.

You might want to check both your Inbox and your Sent box, both contribute to the 500 message limit.