Bike Light interfering with wireless comp?

[VeloVT]

I don't know if I am just weird (certainly a possibility ), but while I have read about this problem a lot I have never had it.

I use Cateye wireless computers and Cateye lights, and on my bike they play nicely together. Lights and computer are probably 3-5 inches apart on my bars, certainly not more. Sometimes I even run two lights on my bars (a bigger, non-flashing light on top and a smaller, flashing light right below it), and my computer still works.

FWIW, I am using the cheaper lights that use disposable batteries. That may have something to do with it?

(For lights, I have the Cateye EL-530 and the Cateye EL-410... and for computers, I have the Cateye Double Wireless-Cadence on one bike and the Cateye Strada Wireless on the other. I've used all possible light combinations with both computers successfully).