Good question...If the gate network doesnt work, wont the Khaak, who have gateless jump drives, just take over the universe, one sector at a time? Or the Xenon just point a fleet at earth and go into 'hibernate' mode for 50 years while they travel there the normal way.
Also, what happened to the Terrans and Xenon having gateless jump drives as well?
Maybe the Khaak thought the hole other universe is dead because nobady
Trys to kill then.
The terrans probably delivered a software update to the xenon, which are now running Xenon-Vista, but there were some little hugs and after going to hibernate the bluescreen of Death appeared.