you said Comcast!!!

Mine, act the same way and it was couple weeks ago..basically on Sunday nights..I called Comcast, they sent the Tech guy ( he is so cute, I made him Nepali Tea)..Nothing wrong...he said its the Comcast....

And now, everything is fine..my roommate, she has a desk top and laptop, and i am using my laptop out here on Sofa...D-link...working perfect...

wish u the best...MuuWaa!!!