After spending no less than 4:30 hours via 3 separate phone calls to Linksys Technical Support (aka "India") I am ready to RMA this router unless anyone here might have a solution. Here goes... I purchased this router to replace my BEFSX41 which works perfectly except for the VPN which I have never been able to get working. I wanted VPN access to my home NAS while traveling using my laptop, but without having to lug another VPN router along with me. But that story is for another thread. Maybe now I will have to revisit that issue though. OK, back to the RVS4000. It came with the earliest version of the firmware, so I first updated it to v 1.0.15 while also updating the IPS signatures to v 1.23. The update appeared to go perfectly. BTW I also upgraded to the new router so that my entire LAN would be gigabit and support jumbo frames (except of course for the WAP), and would have a more robust firewall. My home LAN consists of the following: Desktop PC Laptop (sometimes wired, sometimes wireless) HP Laserjet networked via a D-Link DP101P+ ReadyNAS NV (wired) Dell PowerConnect 2716 (wired) Linksys WAP54G (both?) plugged into the router Comcast broadband - Motorola SB5120 (wired) Vivotek network camera (wireless) Veo network camera (wired) Slim Devices Transporter (wireless) Slim Devices Squeezebox 3 (wireless) Everything on the list is plugged into the switch except for the WAP which is connected to the router, and of course the WAN which goes to the router from the SB5120. Of course, you know more about this stuff than me so that would be a given to you. Although not being a techie, and having zero formal computer or network training I managed to get this all working very reliably. I then attempted to go from this: To this: Effectively just a simple swap out, or so I thought. FYI, I set up all of my network devices with fixed IP addresses to make manageability easier. I leave the DHCP enabled on the router for flexibility and the occaisional invited guest. Everything was 100% OK prior to the RVS4000. 1. First issue - zero WAN throughput. I could log onto my cable modem (192.168.100.1) from both my PC and laptop through the RVS4000 and it showed a good connection and signal. Switched out a couple of the cat6 cables for cat5e, then cat5 (an idea gleaned from the other RVS4000 thread), no help. Did a factory default reset - no help. Started reading the manual and found the 'router' vs. 'gateway' button. Switched it to 'gateway' mode and viola, WAN connectivity. Whew! 2. Second, and yet unresolved issue. I cannot access the ReadyNAS, the shared files/folders on my PC, nor print to the Laserjet from my laptop (sharing is enabled). My PC can print, but cannot access the ReadNAS. I am running Norton I.S. 2007, but everything was working OK prior to the new router, so I am hoping it is not the issue. I have been through every setup page on the RVS4000 as well as all of the calls to India. My eyes hurt from ready through the PDF manual. Any thoughts or ideas prior to me returning it? Thanks, and sorry for being longwinded, but I did not want to leave anything out.