I've had a scan of the net, and of their site, no signs of bad intentions. It could be a false positive, there's enough of them going around but on the other hand it's possible that it's a nasty. I'll run a MBAM scan later and check the startup, all the usual spots.

Found nothing on my system with a full system scan with Avast set on max heuristics and rootkits.
Scanned with Spybot Search & Destroy and Malwarebytes also, nothing. :)

I had sent them an email, telling them that me and some people here had malware alarms and blockings. This is what they said in reply: