In-app billing doesn't work on Nexus S

I'm testing the in-app billing sample code - Dungeons. It doesn't work properly on the device I ha开发者_C百科ve (Nexus S, 2.3.3).

Does the Nexus S have a problem with the In-app Billing?

My debug messages are below:

03-04 10:10:39.199: INFO/BillingService(28888): CheckBillingSupported response code: RESULT_BILLING_UNAVAILABLE
03-04 10:10:39.199: INFO/Dungeons(28888): supported: false

As far as I know, their sandbox testing environment for in-app billing is not ready yet :/. Everybody is getting that error message so far.

No one outside of Google knows what's going on with it, and they aren't talking yet. Check out this and this.