Networking problem & how to keep dust bunnies out?

[flyingmachine]

So I opened up my download box the other night(1st time opened and being off for more than 5 min in 3 years), and it was a mess in there. There was actually a scadfolding of dust inside. Blew as much off as I can, and turned the thing back on. But now, I have a problem, somehow, networking is all screwed up. Wasn't the cable, and the port looked fine. Somehow I could only upload but can't download (according to the network traffic window) Using a USB wireless adapter shows the same symptoms. Even after reinstalling windows, still the same behavior. I'm sure it's not the hub cause I have two other machines connected and they are working fine. Any idea on what to try next? Any idea on how to keep the inside of a case clean? thanks!

 

[Doughbuy]

Use compressed air?

Basically, are you saying that your only sending packets, but not receiving? Can you connect to your router through that computer? Maybe uninstall and reinstall network drivers?