> I have 2 instances of moodle and both crawl. There is no data anywhere except for 2 userId created.
With only two user-ids no system built on common hardware in the last five years should stall. Something is very wrong. You have to debug systematically. It could be a network issue (hosts, DNS, routing, firewalls, ...), Apache configuration, Moodle configuration, ... the list is too long
Since two completely different computers have the same problem, I would start at the network.