@ Richard
"Whilst I agree with you on the bandwagonning comment, surely you would agree that if Microsoft produced a cheaper, more reliable and secure product then it would not be an issue?"
They do - Windows Mobile aka CE.
It's cheap, secure and reliable enough to go into high availability applications like phones.
It's also about as useful as Ubuntu et al for the average PC user, but I bet it would fly on a Core 2.
Back to the article - perhaps a more useful survey would be a comparison between user-created risk ("click this link for FREE PRON!") and genuine technical risk due to OS vulns.
Biting the hand that feeds IT
