Had a low tech customer - helped change his Comcast Gateway password - he kept the same SSID.

I usually the SSID on those-for some reason on this job I just didn't.

Start getting calls that the Wi-Fi keeps dropping in and out and not working well at all.

I drive back out there, and as I'm talking to him in the kitchen, I glance over at the counter and see a wireless Linksys piece. He tells me, oh that's my repeater.

Doh. Repeater with same SSID but different password. Dude you could've told me..