I went from DSL to cable about a month ago. My DSL worked well and I could include my snow bird neighbors on the wireless. This year when they got here, I had changed over to cable, I put one neighbor on the wireless, and he gave out my code to his family, when they left other neighbors came and all together there were nine devices using the internet, mine were my computer, Magic Jack Plus, my laptop, and the new I-pad. My neighbor had his I-Phone, I-Pad, and laptop on. Another neighbor had a laptop and i-phone on for internet use. All told nine devices. Soon my laptop (wireless) computer began dropping off the net, and I would have to go out and reboot the modem and router. Last evening I simply changed the name of my router, and put in a new 16 digit wep key.
My question is would that amount of gear have addressing issues that would give the router a headache? Especially if one or more of the laptops had some kind of malware on it and was sending out bad traffic. All of my computers are relatively clean but those other two laptops are dogs.