Thanks for the input guys. My exchange went 21CN 3 months ago. Prior to that I had to wait several days for the profile to update. From my observations since then the profile moves very quickly with any sync speed change.
Until now that is. Both TBB speedtests and ip profile are 4.1x even though sync is 5312 and has been for days now.
But my current line speed is 4.6 which is 86.5% of my 5312 sync rate. This does not tally with the suggestion that the CLS is slightly more than the ip profile (assuming it is 88.2% of sync)
Update: Just completed another BT speedtest : [IMG]http://i18.photobucket.com/albums/b137/jbuk/btiptst1...
It is not telling the truth though because a TBB speedtest still runs at 4.1x and 3.9x for the multiple thread test.
Something is not quite right here there is no consistency between sync speed, ip profile and PN's annoying CLS.