CRC errors. Should i be concerned ?

[///MoH]

Increases by 1 error every 5 seconds or more... Thing is i never had this problem, My line used to synch at 4mb without a hitch

Modem Status

Connection Status Connected
Us Rate (Kbps) 128
Ds Rate (Kbps) 384
US Margin 23
DS Margin 18
Trained Modulation ADSL_G.dmt
LOS Errors 0
DS Line Attenuation 47
US Line Attenuation 28
Peak Cell Rate 301 cells per sec
CRC Rx Fast 108
CRC Tx Fast 1
CRC Rx Interleaved 0
CRC Tx Interleaved 0
Path Mode Fast Path
DSL Statistics

Near End F4 Loop Back Count 0
Near End F5 Loop Back Count 0

Also iv noticed that when i unplug the filter from the wall socket my SNR drops. That shouldn't be the case should it ?

Modem Status

Connection Status Connected
Us Rate (Kbps) 128
Ds Rate (Kbps) 384
US Margin 23
DS Margin 12
Trained Modulation ADSL_G.dmt
LOS Errors 0
DS Line Attenuation 47
US Line Attenuation 28
Peak Cell Rate 301 cells per sec
CRC Rx Fast 63
CRC Tx Fast 0
CRC Rx Interleaved 0
CRC Tx Interleaved 0
Path Mode Fast Path
DSL Statistics

Near End F4 Loop Back Count 0
Near End F5 Loop Back Count 0

And now

Modem Status

Connection Status Connected
Us Rate (Kbps) 128
Ds Rate (Kbps) 384
US Margin 21
DS Margin 25
Trained Modulation ADSL_G.dmt
LOS Errors 1
DS Line Attenuation 46
US Line Attenuation 28
Peak Cell Rate 301 cells per sec
CRC Rx Fast 67
CRC Tx Fast 1
CRC Rx Interleaved 0
CRC Tx Interleaved 0
Path Mode Fast Path
DSL Statistics

Near End F4 Loop Back Count 0
Near End F5 Loop Back Count 0