I have the ZyXel p320w router, everything works just fine with some laptops and PCs that I have at home. Every now and then the router would snap, the wireless conn drops , so that I cannot connect unless I go and reset the ZyXel. I think that the modem chnages ip every 20 min or so , and router has problem coping with that issue, I can acces the modem which is Siemens
Computers & Internet - Zyxel - Prestige 320W Wireless Firewall Router