I use a Netgear Wireless router.
I had to change the ip address on the router to 192.168.7.1 from 192.168.1.1 because the ip addresses conflict with each other.
Remember that the wireless routers also use the same frequency as portable phones, thus can also contribute to the problems.
Did you run Verizons online speed test?
Have spent 2 hours reading complaints here and on other sites about quirky, slow verizon dsl and the Westell 327 modem/router. My service slows and even sometimes drops, but is fine 90% of the time. After all I have read today I'm thinking of pressuring Verizon for a new router to replace the Westell. I have also noticed something no one has mentioned. My internet light, the one on the far right, is always dimmer than all other lights, even when service is strong. It can be dim when the dsl light next to it is bright green. Often it starts to blink and this is when service is slowest. Does any Westell owner notice this?