Disappearing menubar?

[Joe Pfeiffer]

I'm finding the top menubar on my NEO (containing the main menu and
panel applications area) is occasionally disappearing: the middle area
of the screen expands upwards -- and I can't find a way to get it
back!  It doesn't seem to happen consistently, but it does happen
fairly frequently when I power-on the GSM antenna using the antenna
icon in the upper right.

I'm I missing something in my understanding of the UI, or is this a
bug I need to report?