Could my noise margin be causing slower speeds?

Question

Every so often i keep noticing that my noise margin keeps rising and my speed dropping, what would be the cause of this. My broadband never seems to work properly for any more than a month, i seem to spend most of my time trying to sort out problems with my broadband. Any help would be much appreciated.
Line state
Connected
Connection time
16 days, 19:43:10
Downstream
1,088 Kbps
Upstream
448 Kbps
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VPI/VCI
0/38
Type
PPPoA
Modulation
ITU-T G.992.1
Latency type
Interleaved
Noise margin (Down/Up)
21.8 dB / 15.0 dB
Line attenuation (Down/Up)
58.0 dB / 31.5 dB
Output power (Down/Up)
15.8 dBm / 12.5 dBm
Loss of Framing (Local)
318
Loss of Signal (Local)
810
Loss of Power (Local)
0
FEC Errors (Down/Up)
302497 / 2550
CRC Errors (Down/Up)
5039 / 2147480000
HEC Errors (Down/Up)
nil / 1749
Error Seconds (Local)
7467
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Answer 1

with 16 days connected your is stable but your noise margin is very high at 21.8 as normal is about 6.  I would be hoping for a connection speed of about 2.5/3mb with your connection.
fill up the form and ask the mods to reset your noise margin back to normal 6 and this should increase your speed then just leave it connected  http://bt.custhelp.com/app/contact_email/c/4951
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