OK, not to be the devil's advocate... but why are you so sure that nothing phones home? The mere fact that nothing on your network connects to
https://bigbrother.com/snoop.php?suspectname=aclevernickname... is not solid proof of nothing phoning home. There are many ways of communication over a network, are you sure you check all of them?
If your answer is 'yes'... you should check again :-)
As to you having 'audited' all code running on your network, I can flatly state I don't believe it. I don't doubt you'll have looked over the source for a part of it but there is a difference between 'looking over code' and 'auditing code'. Take the Linux kernel for an example: as of 2013, the Linux 3.10 release had 15,803,499 lines of code (source: Wikipedia:Linux_kernel). Linux for Workgroups has even more. Glibc is good for another 1,188,385 lines of code (source: http://www.ohloh.net/p/glibc). The gcc collection spans 6,242,908 lines (source: http://www.ohloh.net/p/gcc). These are only those projects you mentioned (' I appreciate that you've never decided to do an audit of GCC's, glibc's, or your kernel's source, but understand that others have. I am one of them.').
Understand that an individual who claims to have audited all code on his or her network does not come across like someone who grasps the magnitude of the effort s/he claims to have conquered. This individual either has superhuman powers and unlimited time, or the individual overestimates the efficacy of his or her 'auditing' efforts.
Rationalwiki has just the article to help you decide which of these two is the most likely: http://rationalwiki.org/wiki/Occam%27s_razor
