@rorie: It looks like I'm not even getting Notifications at all. Has only been like that for the last few hours.
Why do these things always seem to happen on the weekends? ha.
If you arent getting them at all, check your profile settings and make sure they are turned on. Sometimes they randomly turn off.
I've noticed a few minutes to maybe half delay for a while now, but just today, I have missed about six notifications from clear replies to me, including yours. I just checked, and the settings are the same as ever. Notifications on but suddenly not showing.