In reply to a post by yarwell:

1500 MTU - easiest to stick at the default.

Was that the same PC as last time on the same network connection ? XP doesn't resize RWIN AFAIK and it's adapter specific.

Thanks.

Same PC and connection. The only thing that changed was that I replaced a Zyxel G202 56kbps adaptor with a TP Link WN821N 300kpbs adaptor - I know T P Link are nothing to write home about but as the Home Hub 2 is N rated I needed something to test it out and there is not much choice in a provincial market town. T P Link is returning 130 kpbs but I have no idea whether that is due to router range or adaptor range or (perish the thought) manufacturer optimism.

If I decide to replace BT's freebie, I will get an adaptor from the same manufacturer - personally I am thinking either Billion or Linksys due to generally good reviews. I just wish Billion did a dual band one.

In reply to a post by b_bliss:

To be honest, if I saw those stats from your router, I would say replace it. Upstream errors are almost always faulty wiring or equipment, and if those stats are accurate, you are sending a lot of upstream errors, which isn't going to help anything. It may also explain the poor wireless performance, but it is a bit of a tenuous link, but may be indicative of a router on its way out.

If you have a spare router, try that, easiest way to find out

To be certain, phone your ISP, and ask them to run a diagnostic. If they are vaguely competent, they'll be able to see the errors themselves, and can advise you accordingly.

Thank you for your comments.

It's a BT Home Hub 2 and is newly supplied. The CRC upstream errors are a bug - now they have a Home Hub 3 its unlikely that they will fix it especially given the period that the Home Hub 2 has been available.

As I indicated earlier in this thread i was on a fast connection with my Zyxel but I was getting line drops and a lot more noise and slow throughput (both wired & wireless). Eventually a BT Openreach Engineer came out and diagnosed a faulty circuit at the exchange. He also replaced the master socket. The line went to interleaved prior to the switch (so I can't say its the circuit that they swapped it to). We did get a power cut before hand and I think it was this and the line drops that fried my Zyxel. As soon as I plugged the Home hub in the noise dropped instantly and the throughput increased immediately to what I am now getting.

I therefore have no idea what is the cause of the errors. I suppose I am going to have to put up with them - I am still getting higher throughput speeds than BT's average on ADSL2+. BT have indicated that they don't think the errors are an issue and given the speeds I am getting I don't think I will get them to do anything further. Of course the hub hides the real upstream CRC errors. Given that you can't get much more than 1 meg upstream its not worth the hassle.

I have been thinking about buying a decent modem router as the diagnostic capability on the Home Hub 2 is limited (and it hides the real upstream errors). I am thinking of either a Billion 7300N or 7800N or a Linksys WAG 320N. The dual band capability of the latter has its attractions, but the very high approval ratings of both Billion's and their error handling also is attractive. I think that Zyxel have lost their way on the domestic market and their support was not the best when I was trying to eliminate potential causes of low speeds and high noise during the last couple of months.

looks like the new adaptor inherited a better RWIN value, such are the vagaries of Windows!

I did not notice your subsequent post with the speed, but, for the removal of doubt, it is best to post all the relevant stats together contemporaneous so that they correspond to each other.