Version 2.1 (5F136)
not jailbroken

Modem Firmware is 04.05.04_G

Issue - "recently" (I can't pinpoint when) I can't see or access my work or home WiFi.  Both locations have the white UFO Extreme.

This eliminates the 802.11N protocol issue, as neither support that.  Moreover, both sites worked with my iPhone, and I haven't upgraded either Base Station.

At work, I power cycled the Base Station and stood 6 inches away from it. My iPhone couldn't see it, but my MacBook could (and other wireless PCs)

Anyone have any ideas?

IMHO, it's from one of Apple's upgrades or an App conflict, but I'd rather not nuke all my apps "just to see".

All help appreciated.