Read the forum guidelines
About 12 noon-ish today (up through the time of this posting at 5:47 pm), my internet connection suddenly slowed to a crawl. I reset the router/modem (Cisco DPQ3925) several times, rebooted the computer, changed the DNS numbers (fixed and assigned), released & renewed the IPs, literally everything you're supposed to do, and nothing worked.
All I can figure at this point is that there's a problem on the Cox end of things, or the router/modem is starting to suffer hardware failure.
We've been having the exact same problem. A trace revealed it is a Cox issue, specifically two servers in New York and Rhode Island.
Please send us an email with your full address and a copy of the traceroute to firstname.lastname@example.org.
Allan - Cox Support Forums Moderator.