Guys I have some good news and some bad news.
The good news is that for the past 6 days,
our server is the most popular of all arma/arma2 servers in the world 
Our overall historical ranking is now 20th and continues climbing daily of course.
Now for the bad news.
My server hosting provider allows 500gb of data transfer per month per server. Usually I'd be lucky if i used 10gb of this allowance as this server was not used for much really.
The Arma 2 server is using around 28Gb PER DAY (around 200Gb/week or 840Gb in a 30 day month) which is a shocking amount, and means that the the bandwidth allowance is going to be used up by this friday and as I'm not sure of the over-usage costs it could potentially mean that the server is stopped until the allowance is reset at the beginning of the new billing month (19th).
I have mailed the datacentre hosting provider for clarification etc, but just thought I'd give you all a heads up.
ArmA 2 server is unbelievable resource hungry in terms of CPU and network bandwidth, never seen a game server like it.