[SOLVED] ubuntu box has no net access on wired internet, but friend's WinXP comp on w

[hanzj]

I moved homes. I'm using the PC of my friend in one room. My Ubuntu box in my room can't get onto the internet. We're using a router. My friend's PC, which I'm using now, has internet connection. My ubuntu box, even though I've connected another cable, doesn't have net connection, and even though wireless router's light on "Lan 1" is lit up, just like light for friend's PC on "LAN 4". Please advise.

According to ubuntu panel, "network connection applet" says "no connection". strange.

interestinngly enough. there is no green light on my ubuntu nic card. In my previous home, I remember seeing a green light.

[hanzj]

The problem was in the cable.