My Actiontec modem GT701-WG has worked great for a long time, but suddenly a few days ago I had to reset it by pulling out the power plug and starting it up again. That worked for a day or so, but it is now to the point where I need to do that every time I want to get online; perhaps every hour. Any ideas? Do I need a new modem?

Computers & Internet - Actiontec - (GS503AD3-01) Modem