Linux health given the reveletion of NSA crypto-subverting attacks?

deepdive writes: I have a basic question. What is the privacy/security health of the Linux kernel (and indeed other FOSS OS's) given all the recent stories about the NSA going in and deliberately subverting various parts of the privacy/security sub-systems. Basically, can one still sleep soundly thinking that the most recent latest/greatest ubuntu/opensuse/what-have-you distro she/he downloaded is still pretty safe. Or do people need to get a little worried and start burning some extra night oil over this?