renameCollection() doesn't seem to work when sharding is enabled (mongodb.la.sol is our mongos instance).

$ /pkg/packages/mongodb-linux-x86_64-2010-01-19/bin/mongo mongodb.la.sol/foo
MongoDB shell version: 1.3.1-
url: mongodb.la.sol/foo
connecting to: mongodb.la.sol/foo
type "help" for help
> show collections
> db.foo.insert(

{test:true}

)
> db.foo.find()

{ "_id" : ObjectId("4b57a13da733b69b57f82ad1"), "test" : true }

> db.foo.renameCollection("foo2")

{ "errmsg" : "assertion: source namespace does not exist", "ok" : 0 }

>