I hate computers, little ones even more

For a while, my phone (HTC Incredible) hasn't been able to keep a wireless connection when it goes into sleep mode. I've set the Wi-Fi Sleep Policy to Never, but it's had no effect. When the screen goes dark, the WiFi connection drops out. If I ping the phone from another system, I can watch it go away.

I've tried various configurations on my routers with no consistent good result. Y'see, sometimes it works as intended. The screen goes to sleep, but the WiFi stays connected and I can listen to music or news or whatever. Most of the time for the past few weeks and constantly now, there's no joy.

I've done several reinstallations of the phone's operating system (Gingerbread, for those who care).

Now, sitting in NuCafe, it works fine. Now, using an open access point, the furshlugginer thing works fine. I have less of an idea why it works here than why it didn't at home.