Oh ya. Double and triple checked that. They're ok.
If not, then that may be part of your problem, if you did, well, it never hurts to double check the simple stuff some times.
IIRC, every wireless computer runs on 2.4Ghz. This means it will get interference from every little wireless hub, router, switch and cordless phone out there. What's weird is that last week I didn't have this issue and yet I'm doing the same route through a fairly populated area. The trick is to find a frequency (aka ID) that isn't as commonly used by other devices in the 2.4Ghz range (somewhat difficult and requires a bit of trial and error). Since it's split into 11 frequencies and the more common ones are 7, 10 and 11 I might be able to find some refuge in some of the others. Maybe 8 would be better...
The fact that it keeps changing readings based on the wireless ID would make me think that there is an interference problem someplace. I have no idea what freq range those things run in, or how they format a signal.