I wanted to install OSX Lion on my new hard disk. I moved my old drive to an external enclosure, and booted with Command+R to load the recovery console. I formatted the disk and then went to "Install".
After about thirty minutes, the time still said "5 hours, 16 minutes" remaining. I loaded up my firewall and found no traffic at all.
I messed around, rebooted to Lion on the old drive, and tried a fresh download of the Lion Install in App Store. (Hold Option, then click on "installed" when looking at the OS X Lion Page).
The download did run, but it was pitifully slow. Over two hours it averaged about 200K/s. I have a modest 15M/2M FiOS connection and I expected much better.
After tooling about, I located my providers stock DNS's. I have been using Google DNS - because it's super fast. I found the DNS w/ the lowest latency, and then I changed DNSMasq to pass all request for "*.apple.com" to the Frontier DNS.
My effect was immediate. I flushed my local dns cache, then paused and restarted the download.
Five minutes later