You might try not rebooting, but unplugging from the internet for 15 min or so, then retry. However, I don't think it will work. I think that's a problem on FIOS itself.
A circumvention is to configure your phone as a mobile internet hot spot and access the internet via your phone when accessing ECCIE till FIOS fixes the problem.
It could be in purpose by Verizon FIOS. Welcome to the end of internet neutrality, where ISP's are free to charge different websites for being faster than others. I'm speculating.It could also be that someone it attempting a DDOS attack on ECCIE and they are using verizon fios, basically clogging your pipes to ECCIE.
Either way, have a circumvention via another ISP.
Edit: Fios confirms they are having problems. Read this
http://forums.verizon.com/t5/FiOS-In...tes/m-p/685471