By "network issue" I meant the entire network, your connection from your router all the way to HTC.
Im in central MA and I have 13 hops to the HTC webpage server. I dont know what the address is for the game server is but Im sure I have atleast that many to it also. Any one of the servers along that route could get clogged with a ton of traffic and slow a download down. Sometimes waiting for a bit to let it clear works (may have been what happened with Bolt), other times you can suffer through. Like I said, Hitech hasnt any control over those hops. Its the luck of the draw your path to a server.
As long as HTC keeps their server and connection as good as it can be (and it seems they are, mine downloaded in under 2 minutes) that is all they can do.