This is just an FYI. All day long, my Email Alerts when new comments are made on my Watched Threads are hitting my Inbox 5 hours after the comment has been made, and long after I've already read them from the Alerts on the forum. The forum Alerts are on time. Dunno if there are other Forum speed issues manifesting themselves for others. I sent myself an email to see if it's a mail server issue on my end, and it came through immediately.
Now it seems to be OK. I forgot to mention that the late notifications would hit in batches...I'd get nothing for hours, then there would be 10 or more hit all at once.