Hello, I have discovered that the search methods search and trends seem to work okay with the domain api.twitter.com. But the methods trends/current, trends/daily, and trends/weekly return 401's. They only appear to work correctly on the search.twitter.com.
I have opened an issue here . Will all search methods eventually work on the api.twitter.com domain? Thanks. Josh  http://code.google.com/p/twitter-api/issues/detail?id=1413