Someone else has posted a topic saying they have the same issue in the same area. Have you checked the service status to see if there's a known problem? They're not that hot at putting known faults on the service status so if it's not on there that doesn't mean there's not a known fault. You would need to ring 150 to find out for sure.
Massage an ego, click the kudos button. If someone answers your question, mark it as helpful. Be nice, eat all your vegetables and keep your room tidy.