Who is your DSL Provider?
Call their Technical Support and tell them you are having intermittent troubles, and tell them it is happening at the particular time it is. They will probably get you to PowerCycle your device. I would advise anyone with DSL issues that the first step is always a GOOD POWERCYCLE! --- Disconnecting Just the Ethernet Cord from the back might work, but I recommend a full powerdown for one to 4 minutes. Than plug the MODEM back in, and wait for all the lights to come on. Be sure to take note of the Light Status as the Agent will surely ask you what it is. If the DSL Company needs to Dispatch a FST (Field Service Technician) they will need the Light Status in the DISPATCH Notes, and on the Ticket. If the Powercycle does not work, call the Tech Support, and tell them you Power Cycled already. They will probably get you to do it again and while you are on the line mention Re provisioning, which they should know already if they are DSL Tech, but mention it anyways as I sometimes forget when I have the Customer/End User on the phone.
If the Repro does not work they will do some further testing, but it sounds to me like either Intermitten Surf-no_sync, or just INtermitten No Sync.
It is possible the Phone Line does something every night at that time, when before they did not.
Is it a Line-Shared Or Dedicated LOOP, using UNE?
Any questions you guys got about DSL Fire Away,
Your SHH, Ex-XBOX LIVE and CURRENT DSL--COVAD--TECH--, Murphy Man.