diff --git a/actions/apiaccountupdateprofilecolors.php b/actions/apiaccountupdateprofilecolors.php
index 3cac829749..c666f9d759 100644
--- a/actions/apiaccountupdateprofilecolors.php
+++ b/actions/apiaccountupdateprofilecolors.php
@@ -22,7 +22,7 @@
  * @category  API
  * @package   StatusNet
  * @author    Zach Copley <zach@status.net>
- * @copyright 2009 StatusNet, Inc.
+ * @copyright 2009-2010 StatusNet, Inc.
  * @license   http://www.fsf.org/licensing/licenses/agpl-3.0.html GNU Affero General Public License version 3.0
  * @link      http://status.net/
  */
@@ -131,7 +131,7 @@ class ApiAccountUpdateProfileColorsAction extends ApiAuthAction
             try {
                 $this->setColors($design);
             } catch (WebColorException $e) {
-                $this->clientError($e->getMessage());
+                $this->clientError($e->getMessage(), 400, $this->format);
                 return false;
             }
 
@@ -153,7 +153,7 @@ class ApiAccountUpdateProfileColorsAction extends ApiAuthAction
             try {
                 $this->setColors($design);
             } catch (WebColorException $e) {
-                $this->clientError($e->getMessage());
+                $this->clientError($e->getMessage(), 400, $this->format);
                 return false;
             }
 
diff --git a/actions/apimediaupload.php b/actions/apimediaupload.php
index ec316edc8d..7aa88c186b 100644
--- a/actions/apimediaupload.php
+++ b/actions/apimediaupload.php
@@ -88,15 +88,15 @@ class ApiMediaUploadAction extends ApiAuthAction
 
         try {
             $upload = MediaFile::fromUpload('media', $this->auth_user);
-        } catch (ClientException $ce) {
-            $this->clientError($ce->getMessage());
+        } catch (Exception $e) {
+            $this->clientError($e->getMessage(), $e->getCode());
             return;
         }
 
         if (isset($upload)) {
             $this->showResponse($upload);
         } else {
-            $this->clientError('Upload failed.');
+            $this->clientError(_('Upload failed.'));
             return;
         }
     }
diff --git a/actions/apistatusesupdate.php b/actions/apistatusesupdate.php
index d65a068f50..fa3f611c0a 100644
--- a/actions/apistatusesupdate.php
+++ b/actions/apistatusesupdate.php
@@ -196,7 +196,8 @@ class ApiStatusesUpdateAction extends ApiAuthAction
         if ($_SERVER['REQUEST_METHOD'] != 'POST') {
             $this->clientError(
                 _('This method requires a POST.'),
-                400, $this->format
+                400,
+                $this->format
             );
             return;
         }
@@ -217,7 +218,7 @@ class ApiStatusesUpdateAction extends ApiAuthAction
 
         if (empty($this->status)) {
             $this->clientError(
-                'Client must provide a \'status\' parameter with a value.',
+                _('Client must provide a \'status\' parameter with a value.'),
                 400,
                 $this->format
             );
@@ -291,8 +292,8 @@ class ApiStatusesUpdateAction extends ApiAuthAction
 
             try {
                 $upload = MediaFile::fromUpload('media', $this->auth_user);
-            } catch (ClientException $ce) {
-                $this->clientError($ce->getMessage());
+            } catch (Exception $e) {
+                $this->clientError($e->getMessage(), $e->getCode(), $this->format);
                 return;
             }
 
@@ -305,7 +306,11 @@ class ApiStatusesUpdateAction extends ApiAuthAction
                         'Max notice size is %d chars, ' .
                         'including attachment URL.'
                     );
-                    $this->clientError(sprintf($msg, Notice::maxContent()));
+                    $this->clientError(
+                        sprintf($msg, Notice::maxContent()),
+                        400,
+                        $this->format
+                    );
                 }
             }
 
@@ -332,7 +337,7 @@ class ApiStatusesUpdateAction extends ApiAuthAction
                     $options
                 );
             } catch (Exception $e) {
-                $this->clientError($e->getMessage());
+                $this->clientError($e->getMessage(), $e->getCode(), $this->format);
                 return;
             }
 
diff --git a/actions/apitimelinegroup.php b/actions/apitimelinegroup.php
index c4a6a18d24..7a40fd8084 100644
--- a/actions/apitimelinegroup.php
+++ b/actions/apitimelinegroup.php
@@ -25,7 +25,7 @@
  * @author    Evan Prodromou <evan@status.net>
  * @author    Jeffery To <jeffery.to@gmail.com>
  * @author    Zach Copley <zach@status.net>
- * @copyright 2009 StatusNet, Inc.
+ * @copyright 2009-2010 StatusNet, Inc.
  * @copyright 2009 Free Software Foundation, Inc http://www.fsf.org
  * @license   http://www.fsf.org/licensing/licenses/agpl-3.0.html GNU Affero General Public License version 3.0
  * @link      http://status.net/
@@ -138,7 +138,9 @@ class ApiTimelineGroupAction extends ApiPrivateAuthAction
                 $this->raw($atom->getString());
             } catch (Atom10FeedException $e) {
                 $this->serverError(
-                    'Could not generate feed for group - ' . $e->getMessage()
+                    'Could not generate feed for group - ' . $e->getMessage(),
+		    400,
+		    $this->format
                 );
                 return;
             }
diff --git a/classes/Notice.php b/classes/Notice.php
index 606803b6f9..12467c8501 100644
--- a/classes/Notice.php
+++ b/classes/Notice.php
@@ -281,8 +281,9 @@ class Notice extends Memcached_DataObject
 
         if (!$profile->hasRight(Right::NEWNOTICE)) {
             common_log(LOG_WARNING, "Attempted post from user disallowed to post: " . $profile->nickname);
+
             // TRANS: Client exception thrown when a user tries to post while being banned.
-            throw new ClientException(_('You are banned from posting notices on this site.'));
+            throw new ClientException(_('You are banned from posting notices on this site.'), 403);
         }
 
         $notice = new Notice();
diff --git a/lib/apiaction.php b/lib/apiaction.php
index 7868ecab15..479a86ad80 100644
--- a/lib/apiaction.php
+++ b/lib/apiaction.php
@@ -27,7 +27,7 @@
  * @author    Jeffery To <jeffery.to@gmail.com>
  * @author    Toby Inkster <mail@tobyinkster.co.uk>
  * @author    Zach Copley <zach@status.net>
- * @copyright 2009 StatusNet, Inc.
+ * @copyright 2009-2010 StatusNet, Inc.
  * @copyright 2009 Free Software Foundation, Inc http://www.fsf.org
  * @license   http://www.fsf.org/licensing/licenses/agpl-3.0.html GNU Affero General Public License version 3.0
  * @link      http://status.net/