I had BT Infinitiy installed only four days ago. (My Hub-3, btw, is only six meters away and in a straight, unobstructed line.) Since then, odd things have been happening.)
My little Samsung netbook, on the one hand, took off like a rocket—achieving at times (per broadbandspeedchecker.com, via wireless, and on a Sunday night) almost twice BT's own anticipated maximum for my line, of 28.4 MBps. My high-spec desktop machine, however, is an altogether different matter. Right now, as I run the two beside each other—but downloading independently—the difference in download speed is like a turtle racing a leopard.
The desktop, btw, is now back on cable—since the wireless-N connector I purchased on BT's advice would not hold a connecton. NOTE: even with the BT Broadband Help Utility I canot change my broadcast channel—as, citing some "unknown technical difficulties" it tells me to re-run the utility—again, and again, and again. No way to spend a weekend, that's some Help utility.
While I'm on the subject, why does BT push using a wireless link—then say here on its Help site, the opposite (only confirming what I originally understood: that a cable link is better then a wireless link)?
So. How do I bring my quite high-spec—cabled—desktop up to anything resembling the speed of my tiny and wirelessly connected netbook?