I have a few DSR-500N's in the field, and for the ones that are connected to cable internet, there is a crippling intermittent problem with web browsing.
Different sites will come up, and other sites will return "Page Cannot Be Displayed". A little while later, the "PCBD" sites will come up fine, and OTHER sites will return "PCBD".
There is no pattern or reason behind which pages Will come down and which will not, as it changes on the fly. One minute your on CNN.com, the next minute CNN.com won't come up, so on, so forth.
I have taken one of these routers from the cable internet ISP connection, set it back to factory defaults, set it up on my home DSL connection, and it ran without fail all weekend.
Have any of you heard of this problem, that seems to be with cable internet only ?