I might be able to add a bit more to this.
I've been an Eclipse broadband customer for about 2 years, and their speed has up until recently been excellent (around 6Mbps, which is about as much as the line can handle).
In the week leading up to Easter weekend – approx 18 April 2011 onwards, the ADSL link got progressively slower, until over the Easter weekend it was so slow as to be unusable for anything – no Tech support as it was Easter. On the 26th (first day after Easter) I was going to report it, but everything suddenly speeded up back to normal (all by itself?).
However about 23rd May it slowed down again and it's been slow ever since (still on going on14th June as I write this). I too was asked to change the router, the micro filter, the phone cable etc. by Eclipse Tech Support and was told that the line was working at 7Mbps (which I agree with – more later). Fortunately I have all of those things without having to go out and buy any. So I systematically changed them all over & it made not one bit of difference. I also carried out extensive speed and other diagnostic tests, using several different computers.
The exact symptoms which I experienced have varied a bit over the weeks, but in essence: Web browsing sometimes slow, Email downloading usually slow and sometimes stops. File downloads run at Mbps speed for the first 1MByte or so (which changed to 2MBytes a couple of days ago) then drops back to less than dial up speed i.e. 10-50Kbps - unless the file is being downloaded from a KCom group server. In that case it downloads at full link Mbps speed – EVEN WHEN another download is chugging along at 10-50Kbps, before, during and after the download from the Kcom server. That's how I know that my link and kit this end are fine!
Right now Eclipse Tech Support are trying to blame BT's local exchange (despite the evidence that the link to me is running at, at least 7Mbps).
Why did I lead in with Easter weekend ? Because last night whilst “Googling” I found this http://www.eclipse.net.uk/marketing/includes/hands/c...
– the gist of which is that Eclipse were aware of a broadband problem causing slow download speeds, which started on April 18th 2011 and according to that web page still has a status of “Open” (on 14th June 2011). The symptoms described were those which I experienced until the end of Easter & began to experience again about May 23rd. They also sound very similar to those described by doughnutdoney and Juliebtb - right down to speed tests giving around 2-3Mbps with speedchecker.org and 0.1-0.5Mbps with speedtest.net (incidentally I checked speedtest.net's server - it downloaded through the Eclipse route at 0.1 Mbps, whilst simultaneously downloading through another ISP's route at 8Mbps!).
Come on Eclipse, isn't it better to sort these things out, instead of losing customers ?