Yes, yesterday afternoon it took about 5-10 minutes for my OTP sms to come through on MTN. It's clear they have a problem. Maybe it's time to call and complain.
When I logged on just after 6 a.m. the problem was there. It's worrying because one doesn't know if someone is logged into the system and scamming our info! I phoned Standard Bank at about 8.03 a.m and was told it was a problem on their side and would come right within an hour but after 9.30 a.m. the problem was still there! Seems to have come right at last.