Hi beatsystem,
Crux of the problem here is from your original post - sync and ready lights drop = NTL Problem.
I guess you have an NTL Home 100 or 120 Ambit.
If your connection does drop out again then it maybe worth pointing your browser to
http://192.168.100.1/ and then enter the user id as root and the password as root
From the cable modem config tab you will then be able to see the downstream power levels when it drops the connection.
If the downstream is fluctuating then only way to resolve is via an NTL Engineer visit to adjust this.
Post back the logs if you cannot get through to them.
