said by camaroz:I just went through this same thing, for a few months. Most of the time, whenever I'd download a large file for any more than 30 seconds or so, the modem would reset. The logs only showing that the modem was going into and not recovering from "ranging mode" The simple solution, upgrade to lightning. By chance, the home office offered to upgrade me at a discount. Since then, the problem has been completely solved.
Sharing your experience is a good thing however I need to caution you and the original poster that in MOST cases similar appearing problems are not related and nor are the solutions. In short what worked for you may not work for others and in this case can create a false expectation that results in a soured relationship between the customer and the company. The OP is encouraged to reach out to me and I will make sure the proper diagnosis and fix is applied.