ADSL CRC Very High. Is this normal?

[Networkace]

Hi when I reboot my router it looks like this

Downstream Upstream

SNR Margin: 13.5 13.1 db
Line Authentication: 42.0 20.5 db
Data Rate: 4095 507 kbps
Max Rate: 8408 976 kbps
POWER: 0.0 4.3 dbm
CRC: 0 0


After 60 min:


SNR Margin: 11.0 13.1 db
Line Authentication: 42.0 20.5 db
Data Rate: 4095 507 kbps
Max Rate: 7800 976 kbps
POWER: 0.0 4.3 dbm
CRC: 51 65497


Is this normal I also have line drops every single day.