Blender version 2.73(a)
NetRender : In large projects when pushing the "Animation on network" button, after a second or so a message pops up saying a socket.timeout is occuring and no rendering starts in the client. The master and slaves do proceed, but are unable to produce the correct files at the end (since no correct info from client).
I changed the default timeout to 1000 (instead of 300) (in the socket.py file - had no time to look in the netrender files) - is drastic but works just fine now for these large projects.
Could someone knowing the netrender -code fix this in the appropriate place(s) for the next update.
PS. To recreate the problem, just append 15 characters form CG Cookie Flex Rig in one scene and try to netrender it.