Setanta North America (http://www.setanta.com/us/How-To-Subscribe/) no longer lists ITVN as a provider. I'm not sure when this occurred, but it was sometime within the last 2 to 3 weeks.
As you may already know, ITVN is in deep financial trouble. They stopped accepting new subscribers about 2 months ago. Setanta is not the first content provider to drop ITVN: they were preceded by Starz. Although ITVN claims that it is "restructuring", it seems far more likely that they are on the verge of complete financial collapse and bankruptcy. We had been ITVN subscribers for a year, until a few weeks ago when we switched from our landline cable TV provider to DirectTV. While ITVN has not responded to numerous emails that we sent to them to cancel our service, stop-payments and reverse-charges were initiated with our bank to prevent future ITVN automated payments from going through.
Since we haven't had the ITVN box turned on or connected for over a month, we don't know whether or not the Setanta channel is still currently accessible via ITVN, but it seems very probable that it will go dark on ITVN soon.
My only advice to everyone who has been watching Setanta via ITVN is to switch to one of the satellite TV services if you can. We are extremely pleased with DirectTV. Not only is the quality of the Setanta channel far superior to ITVN, overall signal quality for all of the DirectTV channels is much better than what we had via cable TV.