I am now seeing this also now that I am on 3.35. When I was on 2.17 I never seen it. I got hit with roaming charges on my last bill. I called sprint and complained that I never seen a roaming icon and that I have the roaming "call guard" on. I refused to pay an extra $5 for unlimited roaming. They finally gave in and gave me "America Roaming" for free!! I think they knew about this problem with the mogul and had no choice but to give in.
Finally, I catch a break!!