Well if you have all the Firewalls OFF, then must be something on the wireless connection, either on the router or on the PC, I have a Linksys WRT54G with the Slingbox for about two years, and I can use my Slingbox on the LAN, wired/wireless with no problem at all, if you think everithing is correctly setup, reset the router to factory settings, ans re-cofigure it, try it out, and if the problem persist, loan a friend laptop, load the Slingplayer on it and if it works,then you will know the computer is the problem, hopefully your computer is not a Vista laptop, because Windows Vista has wireless protocol problems, that apparently were solved on the Service Pack 1.

Viper

Well buddy, Sling support might be right, Linksys is one of the most User-friendly routers, and now you nail me telling me that it worked fine a week ago, than it should be something on the router for fact, do you called Linksys support already?

Viper

I'm sorry to hear that you get so much troubles with the Linksys people, I recently installed on my sister's network a Belkin router, brand new it cost me $50.00 on eBay, it works just fine, I can recommend you one of those, becasue personally I think is a good piece of hardware, however, if your Slingbox is working fine, your network too, and everything is the way it should be, just the Linksys router is the one with the problem Linksys people MUST help you and fix the problem, even if that means to replace you the router for a new one, don't let them just"drop" the problem, you should be enjoying your Slingbox as we all do...Courage my friend!

Viper

I'm assuming that you are running dd-wrt on your linksys because you said 3rd party software. There are a few linksys routers that dd-wrt considered neutered. I forget the reasons but you are suppose to stay away from. I know this because I owned one. That router had problems that brainslayer had to work around. Also Linksys is almost the worst customer service ever. Dlink takes gold for that one. So if you want help goto www.portforward.com. What version linksys do you have? I think it is ver. 6 that is considered neutered. My point to all this if you do have that neutered version then the router has issues and you really should not trust the dhcp.

Run it static and assign the slingboxs ip address. Then you can port forward with assurance that your router is send everything to the correct place. Upnp is nice when it works, but that is the problem when it works. I had the same linksys and after a few years it finally died so I went with dlink dgl-4500. Cost a pretty penny but hasn't failed me yet. The only time it goes down is when I reboot it. But I would not recommend it because the dir-655 does everything mine does and cost a lot less. It just doesn't have wireless "n".

If you need help running your router static goto www.portforward.com. Great site to teach new people the ropes. Give an update when you make some progress.