These downloads are currently hosted at snapshots.megaglest.org (I'm not sure that's the best place - GitHub's CDN may be better suited).
Snapshot downloads are currently bandwidth limited to 1 MB/s (but not 100 KB/s).
Downloading 1 Megabyte / second means 60 MB / min, which is ~ 3,5 GB / hour.
Is this too slow?
Put differently, if ~10 people downloaded this file at the same time the servers' bandwidth would almost get saturated:
10 x (1 MB/s x 8) = 10 x 8 Megabit/s = 80 Mbps
And this server hosts a lot more sites and files which may get simultaneous downloads.
I'd be OK with increasing this to 2 MB/s but more could be harmful.