I have a similar situation.
What else noticed: the icon Edge/Hspda is shown, but the data are not, however, the icon and icon signal white. If you perform the manipulation with the airplane — "not in plane", the icon turns green, and the data go. Manipulation of on / off of the data transfer does not solve the problem.
Phone same lg optimus one p500, android 2.3.3 native + Ruth + a2sd patch.
It's really in the firmware, because last 2.3.2 (if I confuse nothing), this bug was not. As well as colour gradation icons signal level (gray/white/green).