I had my desktop running ubuntu 10.10 at my sisters house hooked up to a router sharing internet with her boyfriend never had a problem with it there I moved into my own apartment this week plugged the cable modem directly into the broadcom ethernet card and couldn't get an ip or anything it wouldnt connect period so i ended up hooking it up usb which works but only at speeds of 5-7mbit when i have 15mbit connection so i put another ethernet card in hoping it was just problem with the card and tried it that worked i got a connection but it was incredibly slow like getting maybe 5k a second so i open network tools in administration menu and start pinging google while i'm waiting on a bandwidth test to complete and it takes off getting like 20mbit keeps that connection for a while then out of nowhere just drops to almost nothing again for a few minutes then falls off completely so i restart and it does the exact same thing starts off slow then something clicks and it works great for 5 min then nothing any ideas?

Does your ISP assign static or DHCP ip addresses. Most likely its DHCP so make sure you have DHCP enabled. Check for damaged cable. If you got a router you should try to hook that up as well to test if its possibly your cable modem or card.

dhcp and ya its enabled i know its something with my computer because my buddies netbook running ubuntu 10.10 it works great on no problems

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