Having only just installed BT Infinity about a month ago, I find my connection inusfferably slow—but since my laptop is getting everything promised, this means my desktop system is the culprit.
At the same time I installed BT Infinity, I installed Windows 7 (as has my laptop).
Frequently, when I go to broadbandpspeedchecker.com, the download will reach the high twenties and more. The problem is, that—not my computer but the download itself will freeze. I can sit watching broadbandspeedchecker.com's dial stuck solid, for anything up to a minute. Thus, when broadbandspeedckecker.com returns a result of, say, 28.5MB dowload speed, it is a (very) false reading.
I also have installed a neat little utility called bitmeter.com (it's free)—and it tells me, amongst other things that my average download speed for the past month is just over ONE Mb!
That isn't the Infinity I'm paying for—but as I say, I don't think BT's at fault.
Im on a wired connection. (Same problem on different cables. Same problem on a wireless dongle.)
I'm on an uncommon Wireless channel (I've tried several).
I've got a wireless accellerator installed (by BT's own engineer.)
So, what else could be the culprit, slowing me down so much?