I sold my customer a WRVS4400N and have had substantial problems. First off.. Cisco sent me a version 2. router which fixes "wireless" problems. After getting the new router in place I still have problems. 2 issues which may be inter-related. First of, after deploying the new router, operation seem good for 2 days, then the customer could not surf the net from hist notebook connected by a wireless connection, I went to the site and found that all wired computers could get out fine, the wireless notebook could ping the internal server, and could ping external addresses if you entered the IP address opposed to the name. I rebooted the notebook, tried all kinds of diagnostics, and finally rebooted the router, once that was done the notebook worked fine. Since then, we hae been able to fairly regularly reproduce that if the customer uses a computer on a wired connection, the Internet has problem. I can't believe that a business class router would have so many problems.