For some reason, all of a sudden, WordPress is not sending out emails when i have something in wait for moderation or of a new comment is made for quite some time. It can be anywhere from half an hour to even a few hours before it finally sends it. This just started the other day. The only thing that has even been messed with are theme files and from what I've read, theme files don't dictated when emails come out or anything along those lines.
Is this happening to anyone else? How can I fix this?