It has been reported by many users of the Efficient Networks 5660 ADSL modem/router that the on-board DNS server can be unreliable. The primary side-effect of this is that web pages will sometimes require you to click the "Refresh" or "Reload" button in your browser before they will load properly.

This problem can be resolved by entering (i.e. "hard coding") the BellSouth DNS server IP addresses on each of the PCs in your network.