diff --git a/lib/mongo/collection.rb b/lib/mongo/collection.rb
index b5b98a5..c65fcee 100644
--- a/lib/mongo/collection.rb
+++ b/lib/mongo/collection.rb
@@ -333,6 +333,10 @@ module Mongo
     # @option opts [Boolean] :continue_on_error (+false+) If true, then
     #   continue a bulk insert even if one of the documents inserted
     #   triggers a database assertion (as in a duplicate insert, for instance).
+    #   If not using safe mode, the list of ids returned will
+    #   include the object ids of all documents attempted on insert, even
+    #   if some are rejected on error. When safe mode is
+    #   enabled, any error will raise an OperationFailure exception.
     #   MongoDB v2.0+.
     #
     # @core insert insert-instance_method
@@ -624,7 +628,12 @@ module Mongo
       if raw
         result
       elsif result["result"]
-        @db[result["result"]]
+        if result['result'].is_a? BSON::OrderedHash and result['result'].has_key? 'db' and result['result'].has_key? 'collection'
+          otherdb = @db.connection[result['result']['db']]
+          otherdb[result['result']['collection']]
+        else
+          @db[result["result"]]
+        end
       else
         raise ArgumentError, "Could not instantiate collection from result. If you specified " +
           "{:out => {:inline => true}}, then you must also specify :raw => true to get the results."
diff --git a/lib/mongo/connection.rb b/lib/mongo/connection.rb
index 57c3947..318c917 100644
--- a/lib/mongo/connection.rb
+++ b/lib/mongo/connection.rb
@@ -604,6 +604,8 @@ module Mongo
     def check_is_master(node)
       begin
         host, port = *node
+        socket = nil
+        config = nil
 
         if @connect_timeout
           Mongo::TimeoutHandler.timeout(@connect_timeout, OperationTimeout) do
diff --git a/lib/mongo/exceptions.rb b/lib/mongo/exceptions.rb
index 2403cf9..3e39fdc 100644
--- a/lib/mongo/exceptions.rb
+++ b/lib/mongo/exceptions.rb
@@ -37,9 +37,6 @@ module Mongo
      end
   end
 
-  # Raised when configuration options cause connections, queries, etc., to fail.
-  class ConfigurationError < MongoRubyError; end
-
   # Raised on fatal errors to GridFS.
   class GridError < MongoRubyError; end
 
diff --git a/lib/mongo/gridfs/grid.rb b/lib/mongo/gridfs/grid.rb
index 0f55e0b..d8aa018 100644
--- a/lib/mongo/gridfs/grid.rb
+++ b/lib/mongo/gridfs/grid.rb
@@ -70,7 +70,7 @@ module Mongo
       opts     = opts.dup
       filename = opts[:filename]
       opts.merge!(default_grid_io_opts)
-      file = GridIO.new(@files, @chunks, filename, 'w', opts=opts)
+      file = GridIO.new(@files, @chunks, filename, 'w', opts)
       file.write(data)
       file.close
       file.files_id
diff --git a/test/collection_test.rb b/test/collection_test.rb
index df61389..ed90ca7 100644
--- a/test/collection_test.rb
+++ b/test/collection_test.rb
@@ -151,6 +151,19 @@ class TestCollection < Test::Unit::TestCase
     end
   end
 
+  def test_bulk_insert
+    @@test.remove
+    docs = []
+    docs << {:foo => 1}
+    docs << {:foo => 2}
+    docs << {:foo => 3}
+    response = @@test.insert(docs)
+    assert_equal 3, response.length
+    assert response.all? {|id| id.is_a?(BSON::ObjectId)}
+    assert_equal 3, @@test.count
+    @@test.remove
+  end
+
   def test_bulk_insert_with_continue_on_error
     if @@version >= "2.0"
       @@test.create_index([["foo", 1]], :unique => true)
@@ -546,6 +559,19 @@ class TestCollection < Test::Unit::TestCase
         @@test.map_reduce(m, r, :raw => true, :out => {:inline => 1})
         assert res["results"]
       end
+      
+      def test_map_reduce_with_collection_output_to_other_db
+        @@test << {:user_id => 1}
+        @@test << {:user_id => 2}
+        
+        m = Code.new("function() { emit(this.user_id, 1); }")
+        r = Code.new("function(k,vals) { return 1; }")
+        res = @@test.map_reduce(m, r, :out => {:replace => 'foo', :db => 'somedb'})
+        assert res["result"]
+        assert res["counts"]
+        assert res["timeMillis"]
+        assert res.find.to_a.any? {|doc| doc["_id"] == 2 && doc["value"] == 1}
+      end
     end
   end