diff --git a/CHANGELOG.md b/CHANGELOG.md
index a8464b5345..44e52eecb5 100644
--- a/CHANGELOG.md
+++ b/CHANGELOG.md
@@ -1,5 +1,10 @@
 # Changelog
 
+## 0.4.0 (2013-06-03)
+ + Introducing Builder: 'docker build' builds a container, layer by layer, from a source repository containing a Dockerfile
+ + Introducing Remote API: control Docker programmatically using a simple HTTP/json API
+ * Runtime: various reliability and usability improvements
+
 ## 0.3.4 (2013-05-30)
  + Builder: 'docker build' builds a container, layer by layer, from a source repository containing a Dockerfile
  + Builder: 'docker build -t FOO' applies the tag FOO to the newly built container.
diff --git a/changes.go b/changes.go
index e50b88758a..dc1b015726 100644
--- a/changes.go
+++ b/changes.go
@@ -65,7 +65,7 @@ func Changes(layers []string, rw string) ([]Change, error) {
 		file := filepath.Base(path)
 		// If there is a whiteout, then the file was removed
 		if strings.HasPrefix(file, ".wh.") {
-			originalFile := strings.TrimPrefix(file, ".wh.")
+			originalFile := file[len(".wh."):]
 			change.Path = filepath.Join(filepath.Dir(path), originalFile)
 			change.Kind = ChangeDelete
 		} else {
diff --git a/commands.go b/commands.go
index fbe72b6e93..7df925124d 100644
--- a/commands.go
+++ b/commands.go
@@ -28,7 +28,7 @@ import (
 	"unicode"
 )
 
-const VERSION = "0.3.4"
+const VERSION = "0.4.0"
 
 var (
 	GIT_COMMIT string
diff --git a/packaging/ubuntu/changelog b/packaging/ubuntu/changelog
index 10151ed483..5fc2e49d5e 100644
--- a/packaging/ubuntu/changelog
+++ b/packaging/ubuntu/changelog
@@ -1,3 +1,10 @@
+lxc-docker (0.4.0-1) precise; urgency=low
+  - Introducing Builder: 'docker build' builds a container, layer by layer, from a source repository containing a Dockerfile
+  - Introducing Remote API: control Docker programmatically using a simple HTTP/json API
+  - Runtime: various reliability and usability improvements
+
+ -- dotCloud <ops@dotcloud.com>  Mon, 03 Jun 2013 00:00:00 -0700
+
 lxc-docker (0.3.4-1) precise; urgency=low
   - Builder: 'docker build' builds a container, layer by layer, from a source repository containing a Dockerfile
   - Builder: 'docker build -t FOO' applies the tag FOO to the newly built container.
diff --git a/registry/registry.go b/registry/registry.go
index cc5e7496b9..6f1446ef02 100644
--- a/registry/registry.go
+++ b/registry/registry.go
@@ -64,7 +64,11 @@ func (r *Registry) LookupRemoteImage(imgId, registry string, authConfig *auth.Au
 	}
 	req.SetBasicAuth(authConfig.Username, authConfig.Password)
 	res, err := rt.RoundTrip(req)
-	return err == nil && res.StatusCode == 307
+	if err != nil {
+		return false
+	}
+	res.Body.Close()
+	return res.StatusCode == 307
 }
 
 func (r *Registry) getImagesInRepository(repository string, authConfig *auth.AuthConfig) ([]map[string]string, error) {
@@ -152,16 +156,19 @@ func (r *Registry) GetRemoteTags(registries []string, repository string, token [
 		}
 		req.Header.Set("Authorization", "Token "+strings.Join(token, ", "))
 		res, err := r.client.Do(req)
-		defer res.Body.Close()
 		utils.Debugf("Got status code %d from %s", res.StatusCode, endpoint)
-		if err != nil || (res.StatusCode != 200 && res.StatusCode != 404) {
+		if err != nil {
+			return nil, err
+		}
+		defer res.Body.Close()
+
+		if res.StatusCode != 200 && res.StatusCode != 404 {
 			continue
 		} else if res.StatusCode == 404 {
 			return nil, fmt.Errorf("Repository not found")
 		}
 
 		result := make(map[string]string)
-
 		rawJson, err := ioutil.ReadAll(res.Body)
 		if err != nil {
 			return nil, err
@@ -467,9 +474,15 @@ type Registry struct {
 }
 
 func NewRegistry(root string, authConfig *auth.AuthConfig) *Registry {
+	httpTransport := &http.Transport{
+		DisableKeepAlives: true,
+	}
+
 	r := &Registry{
 		authConfig: authConfig,
-		client:     &http.Client{},
+		client: &http.Client{
+			Transport: httpTransport,
+		},
 	}
 	r.client.Jar = cookiejar.NewCookieJar()
 	return r
diff --git a/server.go b/server.go
index 2a4b103654..6b26287341 100644
--- a/server.go
+++ b/server.go
@@ -321,6 +321,7 @@ func (srv *Server) pullImage(r *registry.Registry, out io.Writer, imgId, endpoin
 			if err != nil {
 				return err
 			}
+			defer layer.Close()
 			if err := srv.runtime.graph.Register(utils.ProgressReader(layer, contentLength, out, sf.FormatProgress("Downloading", "%v/%v (%v)"), sf), false, img); err != nil {
 				return err
 			}