I bought this router WRVS4400Nv2 recently and I have been behaving strange since then and here are a few instances
1. Factory reset - Login to admin gui and it times out every few mins ( Which is normal ) but after a while it just gives up the time out feature. I can login to the console on a dozen computers and leave it on forever and it would never timeout
2. Refuses any firmware upgrade not matter what I get from Cisco tech support even after a complete factory reset
3. Even with wireless completely disabled!! linksys-n pop's up every now and then with no security setting. Anybody can get in and snoop on your network.
4. I can go more and more but I will stop here
I know there are some back doors into this router which I tried after having this problem and I was shocked to see a product from cisco to a small business having such back door's hidden.
It's a shame that this product should ever be released in to this market with so many holes.
I spent hours with tech support and their answer was "Just return it or we can do a RMA".
Watch out before you buy this product. You will be naked in the network world with this product.
If anybody has a very good explanation to this, I would like to hear it from cisco