Top call on speed tester. profile capped at 250kbps download, 730kbps upload. Not dropped since your help on forcing to adsl. 4 days and counting!

Why has it fallen to me to milk you guys for info to get broadband working? Surely the BT engineers should have sorted this stuff out? On the phone now trying to get cap removed. Fingers crossed I will have super speedy stable half meg throughtput by the end of the day! HA!

Can I alter power output? Is that something BT can alter?
It's a bit off topic but what is FEC, CRC, HEC, VPI/VCI, latency type, and why is output power measured in dB metres?

I don't think you can alter output power. I doubt if BT can either.

Nothing to do do with metres, millwatts.

dBm = 10 log (power out / 1mW)

FEC forward error correction - this is a count of the number of errors automatically corrected at the receiver (using the checksum data in the interleaved packet).

CRC cyclic redundancy check - an uncorrectable error

HEC an error in the header byte of an ADSL packet (data is broken down into ADSL packets of 53 bytes)

VPI/VCI http://en.wikipedia.org/wiki/Virtual_Channel_Identifier

latency type - fast path or interleaved

Many thanks for all your help yet again guys.

Still having some issues, and I don't know if BT are fobbing me off. Had another visit from engineers armed with some guff about an echange issue and rebuilding my profile again.
Things seam more stable and the speed has increased, but downloads still take for ever (30kbps ish from amazon). The engineer set things back to adsl2+. Was that the right thing to do?
here is the screen shot off my homehub3:

ADSL Line Status
Connection Information
Line state: Connected
Connection time: 1 days, 19:52:47
Downstream: 664 Kbps
Upstream: 759.9 Kbps

ADSL Settings
VPI/VCI: 0/38
Type: PPPoA
Modulation: G.992.3 Annex A
Latency type: Interleaved
Noise margin (Down/Up): 3.1 dB / 6.1 dB
Line attenuation (Down/Up): 67.8 dB / 35.9 dB
Output power (Down/Up): 14.6 dBm / 12.6 dBm
FEC Events (Down/Up): 268719460 / 6155
CRC Events (Down/Up): 829437 / 696
Loss of Framing (Local/Remote): 0 / 0
Loss of Signal (Local/Remote): 0 / 0
Loss of Power (Local/Remote): 0 / 0
HEC Events (Down/Up): 679387 / 772
Error Seconds (Local/Remote): 591825 / 3062

Is that amount of fec/crc/hec right?