After reading about Aurora and Stuxnet, government backdoors don't seem farfetched. But why would they want to backdoor a bunch of cheapskate Linux developers? The cyberwar budget is large, but it's not infinite.
I'm not on board the conspiracy theorists' train, but it seems to me that people interested in Raspberry Pi would be among the most interesting groups to any government agencies.
Think of the fact that people who have acted as "Anonymous", Wikileaks, etc. are all quite techy.
Also the fact that places like HN seem to be much more pro-wikileaks and pro-anon (at least in terms of their goals, if not their methods) than average non-techy people would be.
Even without these crossovers that I think exist, with the nature of modern computers/internet/etc it seems fairly obvious that this is one of the most dangerous areas for future government problems, be it in terms of revolution, or terrorism, or simply generic law breaking. The people with the technical skills to cause problems in these areas are the people with the technical skills to potentially be interested in projects like Raspberry Pi.
