Seems people over on the Digiguide forums have noticed the errors too, altho related to digiguide not the NTL EPG.
http://forums.digiguide.com/topic.asp?id=12801
How come I'm the only one who's 'anal' about the EPG in general??
After all it's a major part of the digital tv experience, when it's not working or provides the wrong data, it can be a major pain.