Hey, thanks for that info regarding VAC. Another newbie question, is Solo mode offline or online? I'd like to know before purchasing via the Steam Sale. I noticed that there is a 3rd Party DRM which makes me assume that the Solo mode is online, hence possible more risky. Although Steam doesn't seem to be as pedantic regarding VAC (compared to 6-12 months ago). Cheers for any response.
From what I can tell, solo mode appears to be online. If you go idle while playing solo, it will eventually tell you that you have been "disconnected" - although you can still continue playing.