New Box = disconnected more often?

[USB>ethernet]

Sorry if this has been done before! But I tried searching

But anyways, I had a problem with the ethernet port on my original Ambit250 (the silver one). So I called them up and had it replaced a few days ago.

All's good? Nope!

Well EVERYDAY about 3 times every 2 hours the connection will randomly drop and sign me out of everything. I go to Network Connections when I have no signal and nothing has changed, the Ip is still there, subnet and everything. The ONLY way to resolve it is if I disable then enable the connection

I was thinking it could be my port, but then again it's a new eth card I am using, and a few problem targetting exercises boiled it down to the box on both occasions

Any idea wtf is happening? As I can't even get a LEGAL file from megaupload or zshare as the connection ALWAYS seems to get worse then. I feel to go back to my USB connection :(

[hairy_mick]

make sure the coax cable it tight on the modem and isolator

[USB>ethernet]

^ I'll try it, I remember not trying to screw it on too hard because the box was so flimsy!

[Mick Fisher]

Post your signal levels.

[USB>ethernet]

I haven't done it before, so I think this is what you want:

Downstream
Cable Modem Downstream
Downstream Lock : Locked
Downstream Channel Id : 60
Downstream Frequency : 402750000 Hz
Downstream Modulation : QAM256
Downstream Symbol Rate : 5360.537 Ksym/sec
Downstream Interleave Depth : taps32Increment4
Downstream Receive Power Level : 1.9 dBmV
Downstream SNR : 40.5 dB

Upstream
Upstream Lock : Locked
Upstream Channel ID : 4
Upstream Frequency : 37500000 Hz
Upstream Modulation : QPSK
Upstream Symbol Rate : 2560 Ksym/sec
Upstream transmit Power Level : 39.0 dBmV
Upstream Mini-Slot Size : 2

Cable Modem Upstream Burst
Modulation Type QPSK QPSK QPSK QPSK QPSK
Differential Encoding Off Off Off Off Off
Preamble Length 64 128 128 100 80
Preamble Value Offset 396 6 6 396 396
FEC Error Correction (T) 0 5 5 3 9
FEC Codeword Information Bytes (k) 16 34 34 78 232
Scrambler Seed 338 338 338 338 338
Maximum Burst Size 0 0 0 35 254
Guard Time Size 8 48 48 25 134
Last Codeword Length Fixed Fixed Fixed Short Short
Scrambler on/off On On On On On

It cut out on me again when I tried to download a file from Megaupload this morning, kinda annoying now

[Mick Fisher]

They seem to be fine.
Do you use a router? If so try connecting direct to see if it helps.
You say you have a new ethernet card. Have you installed the latest drivers off the net. Drivers provided on CD are usually out of date.

[MovedGoalPosts]

Are you sure it's the ethernet connection on your PC, or the modem, or even Virgin Media? What exactly has to be rebooted to get the connection to restart. If the internet stops, but you can still browse to the modem config page then it's VM side / modem. If you cannot browse even to the modem config page, then it's the modem / computer. If a reboot of the modem only solves it you know it's Modem / VM. If a reboot of the computer only solves it, that would point to the computer.

Does the problem only manifest itself when you have larger files being downloades, or is it completely random? Is it possible for some antivirus type activity to be overworked and shutting down?

[USB>ethernet]

@ Rob I'll get on the case when it next shuts down.
@ Mick No router at all, just direct to the ethernet port on the PC. I'll double check on those drivers