Over the last week the site has been subjected to an enormous amount of 'requests' coming from a range of German IP's.
Generally, we run about 15 gigs of traffic on a heavy month which was under the 20gb limit I had with MD.
This month due to the inbound traffic, we were running around 3gb a day - it clobbered the useage allowance.
I've moved hosts to an unlimited one that also has a greater storage capicty (200gb) and is cheaper as well.
With the extra space I'll be expanding the site to include a lot more than just the forums as well.
My apologies for the downtime.