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Mac OS X 10.3.8 Special Report: Routers and slow network performance
Some routers -- particularly a handful of models manufactured by NetGear -- can cause a reduction in network performance under Mac OS X 10.3.8. When this situation occurs, users can often resolve the issue by removing the offending router from the network set-up.
Potential solutions include:
Manually entering DNS numbers Some users have been able to reclaim lost network performance by manually entering DNS server addresses in the Network Pane of System Preferences. Many times your ISP's specific DNS addresses can be found in in the on-router configuration file, usually accessible via the URL "192.168.1.1." (check your router manual for more information).
MacFixIt reader Eric writes: "I've seen this problem with my Netgear WRG614v4. My guess is that the users having this problem are getting the DNS servers via DHCP. I've had success getting 'net speeds back up by manually typing in the DNS servers from my ISP on the clients. In the Netgear router's config page those IPs can be found in the Router Status area. I don't know why having a DNS supplied via DHCP is causing problems because the correct DNS servers show up in /etc/resolv.conf but manually typing in the DNS in the Network Prefpane fixes it."
Andy James writes: "I too have had issues with the 10.3.8 update and my Netgear MR814v2 router (on EarthLink DSL). I have tracked down the issue a bit, though -- it seems to be somehow related to the router's DNS proxy feature. By default, the router gives out its own address for all DHCP clients, then it seems to serve as a proxy for all DNS requests. If I hard-code the DNS addresses into the computer (not the router), I get better network performance than I have ever
