I have comcast connection through a Motorola Surfboard SB5120 modem and a Linksys wireless router. My internet has always been fast up until a few weeks ago. It seems as though every time it storms or rains excessively, my internet becomes really slow. All of the green lights on my modem stay solid and my connection seems fine, but when I open up my web browser, the internet is really slow. I have tried plugging my modem directly to my computer (w/out the router), I have tried plugging the cable directly into the wall (w/out cable splitter), I have replaced the cable splitters, I have tried switching the host computer, and nothing seems to work. The internet sometimes becomes fast again, but for example, last night there was an electrical storm, and the internet is slow again this morning. I am starting to think it is the Motorolla Surfboard modem, even though I have had it for only 2 years. Can someone please give me some advice about my problem. Thank you.
I think what’s really happening is it’s raining, people are home on their computers. Your shared internet connection is slowing down since Cable is a shared type of service.
Comcast? They’ve been to my house 5 times, and I’m not exaggerating, to get my wireless right. Call them. You’ll go through 3 or 4 people who think they can fix it over the phone, and then they’ll send out a tech who has to get directions from someone else on the phone, but after several attempts, they will get it right!
it is very odd that your internet is slow when a storm accurs, Try testing your connection speed before and during a storm with the link below. It might not be your connection, call comcast with your results and see what they say
There is a good article on slow internet speed on the following link. I think it may help you. Have a look on it.
http://www.itsupportcell.com/viewtopic.php?f=15&t=50