just done a speed test (again) on adsl guide this is what it showed

4,186.6 Kbps does this mean its a 4mb connection
this is what my router is showing 6464 kbps

just downloaded itunes i always use this for speed testing it normally downloads about 400-450kbs or therabouts, at night its coming down at 50-70kbs.
when on aol i was still getting the fast speed at night so i know the line is capable of doing this.
one strange thing is that on speed tests sky is showing faster tests than aol ever did and ive had downloads at over 600kbs with sky