Hi Guys:
To you folks who are using Verizon FIOS - I had the same slowdown issues as has been described. It's not the router or firmware it's the way Verizon derives its DNS settings for FIOS.
If you go into the router setup menu, you'll probably see all zeros for the primary DNS and secondary DNS settings (under WAN\LAN menu). Normally this is OK because the system will generate a DNS setting on the fly. While this works great for Windows PCs, it does not always work correctly for Mac airport or Mac ethernet.
Here's how to resolve the problem: First go into System Preferences and open Network. If you're Airport Connected, it'll show up that way by being highlighted. Now click on the Advanced button. Click on DNS.
**Note (from Lahn)- I selected AUTOMATIC for LOCATION
Then under the Tab TCP/IP there is a box DNS Servers. In this box I added both of the codes below. It didn't have another box for the Secondary. I am the kind of user that needs screenshots (LOL). And I got this to work! YEY! Thanks!!!***
Add these settings in for Primary DNS and Secondary DNS:
Primary = 208.67.222.222
Second = 208.67.220.220
Click OK and go back one step. Now choose ethernet and put in the same settings for DNS Server. Close the dialog.
Now go into your router and do the same thing for primary and secondary DNS settings. Reboot the router.
Those settings for primary and secondary are for OpenDNS. Standard DNS servers which are separate from Verizon or any other ISP. They're fast and work well. I finally found someone at Verizon FIOS support who understands Mac machines and OS X and he agreed with me.
Give it a try but before you do, make sure you write down all your old settings so you can go back in case things don't work out.
Regards.