Have you tried to add nodes?
addnode=74.208.230.160
addnode=31.220.25.91
addnode=184.155.218.183
addnode=24.119.23.61
addnode=70.196.193.231
addnode=198.98.118.241
addnode=142.4.204.115
addnode=23.90.191.58
If those don't help, you could also try adding:
addnode=84.27.153.252
I'll see about allowing more than 125 connections to enable supernode mode.
Edit: currently allowing 500 connections, though if my connection becomes too slow I'll throttle back to something sustainable.
Allowing a maximum of eight connections per IPv4 /24 subnet and 2 connections per IPv4 address to spread my availability over the network.
Where am I supposed to add these things...?
Also, I was afk for a while and when I came back I noticed that it had downloaded about half of the blockchain, but now it doesn't have a connection anymore :S