Another notification icon question...

[idenlover]

I have latest version of cookie installed, and just to the left of the EV/1X indicator, this gray, moon-looking icon occasionally pops up, and then eventually goes away. I'll snag a screen grab next time I see it, but it's a gray square, with a gray, round symbol in the middle of it. It really does look like a moon, but I'm guessing it has more to do with signal and not weather. Any input would as to what my phone is trying to tell me would help. Thanks!

I did post in the energy forum as well, but once again everyone was too busy to reply.