The Social Wave server was upgraded last night and while the move went smoothly by most accounts, we are experiencing a couple of glitches that we're currently trying to work out. One problem that we're having is with sending out email notfications and emails forwarded through member profiles. If you're in line to receive any emails that are sent through Social Wave, your messages are being held up.
I should be able to get this fixed by the end of the day.
Update: I haven't gotten the problem totally fixed yet, but mail going through Social Wave is getting delivered again, but with a delay. Allow 15 minutes for notifications and email messages to make it through.