If you have a paid app or in-app purchases on Android Market, it might help to pop into the Market Console and see what's going on.
There is nothing from Google Support yet. Since Google killed developer forums, check out newest posts on these links to see what's up:
http://code.google.com/p/marketbilling/issues/detail?id=39
http://www.google.com/support/forum/p/Android+Market/thread?tid=0a4dfde89848e59a&hl=en
http://www.google.com/support/forum/p/Android+Market/thread?tid=17337472f1898cb5&hl=en
http://www.google.com/support/forum/p/Android+Market/thread?tid=0ca55eaf36ef5950&hl=en