diff --git a/src/IDF/Form/IssueCreate.php b/src/IDF/Form/IssueCreate.php
index 9cacac6..56f9ceb 100644
--- a/src/IDF/Form/IssueCreate.php
+++ b/src/IDF/Form/IssueCreate.php
@@ -276,6 +276,7 @@ class IDF_Form_IssueCreate extends Pluf_Form
         $comment->create();
         // If we have a file, create the IDF_IssueFile and attach
         // it to the comment.
+        $created_files = array();
         for ($i=1;$i<4;$i++) {
             if ($this->cleaned_data['attachment'.$i]) {
                 $file = new IDF_IssueFile();
@@ -283,8 +284,36 @@ class IDF_Form_IssueCreate extends Pluf_Form
                 $file->submitter = $this->user;
                 $file->comment = $comment;
                 $file->create();
+                $created_files[] = $file;
             }
         }
+        /**
+         * [signal]
+         *
+         * IDF_Issue::create
+         *
+         * [sender]
+         *
+         * IDF_Form_IssueCreate
+         *
+         * [description]
+         *
+         * This signal allows an application to perform a set of tasks
+         * just after the creation of an issue. The comment contains
+         * the description of the issue.
+         *
+         * [parameters]
+         *
+         * array('issue' => $issue,
+         *       'comment' => $comment,
+         *       'files' => $attached_files);
+         *
+         */
+        $params = array('issue' => $issue,
+                        'comment' => $comment,
+                        'files' => $created_files);
+        Pluf_Signal::send('IDF_Issue::create', 'IDF_Form_IssueCreate',
+                          $params);
         return $issue;
     }
 
diff --git a/src/IDF/Form/IssueUpdate.php b/src/IDF/Form/IssueUpdate.php
index 3422551..2d5245f 100644
--- a/src/IDF/Form/IssueUpdate.php
+++ b/src/IDF/Form/IssueUpdate.php
@@ -305,6 +305,7 @@ class IDF_Form_IssueUpdate  extends IDF_Form_IssueCreate
             $this->issue->submitter != $this->user->id) {
             $this->issue->setAssoc($this->user); // interested user.
         }
+        $attached_files = array();
         for ($i=1;$i<4;$i++) {
             if ($this->cleaned_data['attachment'.$i]) {
                 $file = new IDF_IssueFile();
@@ -312,8 +313,36 @@ class IDF_Form_IssueUpdate  extends IDF_Form_IssueCreate
                 $file->submitter = $this->user;
                 $file->comment = $comment;
                 $file->create();
+                $attached_files[] = $file;
             }
         }
+        /**
+         * [signal]
+         *
+         * IDF_Issue::update
+         *
+         * [sender]
+         *
+         * IDF_Form_IssueUpdate
+         *
+         * [description]
+         *
+         * This signal allows an application to perform a set of tasks
+         * just after the update of an issue.
+         *
+         * [parameters]
+         *
+         * array('issue' => $issue,
+         *       'comment' => $comment,
+         *       'files' => $attached_files);
+         *
+         */
+        $params = array('issue' => $this->issue,
+                        'comment' => $comment,
+                        'files' => $attached_files);
+        Pluf_Signal::send('IDF_Issue::update', 'IDF_Form_IssueUpdate',
+                          $params);
+
         return $this->issue;
     }
 }
diff --git a/src/IDF/Form/ReviewCreate.php b/src/IDF/Form/ReviewCreate.php
index 2b914e4..e709695 100644
--- a/src/IDF/Form/ReviewCreate.php
+++ b/src/IDF/Form/ReviewCreate.php
@@ -205,6 +205,30 @@ class IDF_Form_ReviewCreate extends Pluf_Form
         $patch->patch = $this->cleaned_data['patch'];
         $patch->create();
         $patch->notify($this->project->getConf());
+        /**
+         * [signal]
+         *
+         * IDF_Review::create
+         *
+         * [sender]
+         *
+         * IDF_Form_ReviewCreate
+         *
+         * [description]
+         *
+         * This signal allows an application to perform a set of tasks
+         * just after the creation of a review and the notification.
+         *
+         * [parameters]
+         *
+         * array('review' => $review,
+         *       'patch' => $patch);
+         *
+         */
+        $params = array('review' => $review,
+                        'patch' => $patch);
+        Pluf_Signal::send('IDF_Review::create', 'IDF_Form_ReviewCreate',
+                          $params);
         return $review;
     }
 
diff --git a/src/IDF/Form/UpdateUpload.php b/src/IDF/Form/UpdateUpload.php
index f25c81f..258890b 100644
--- a/src/IDF/Form/UpdateUpload.php
+++ b/src/IDF/Form/UpdateUpload.php
@@ -146,6 +146,28 @@ class IDF_Form_UpdateUpload extends Pluf_Form
         $this->upload->modif_dtime = gmdate('Y-m-d H:i:s');
         $this->upload->update();
         $this->upload->batchAssoc('IDF_Tag', $tags);
+        /**
+         * [signal]
+         *
+         * IDF_Upload::update
+         *
+         * [sender]
+         *
+         * IDF_Form_UpdateUpload
+         *
+         * [description]
+         *
+         * This signal allows an application to perform a set of tasks
+         * just after the update of an uploaded file.
+         *
+         * [parameters]
+         *
+         * array('upload' => $upload);
+         *
+         */
+        $params = array('upload' => $this->upload);
+        Pluf_Signal::send('IDF_Upload::update', 
+                          'IDF_Form_UpdateUpload', $params);
         return $this->upload;
     }
 }
diff --git a/src/IDF/Form/Upload.php b/src/IDF/Form/Upload.php
index 7379e2a..241fd08 100644
--- a/src/IDF/Form/Upload.php
+++ b/src/IDF/Form/Upload.php
@@ -176,6 +176,28 @@ class IDF_Form_Upload extends Pluf_Form
         }
         // Send the notification
         $upload->notify($this->project->getConf());
+        /**
+         * [signal]
+         *
+         * IDF_Upload::create
+         *
+         * [sender]
+         *
+         * IDF_Form_Upload
+         *
+         * [description]
+         *
+         * This signal allows an application to perform a set of tasks
+         * just after the upload of a file and after the notification run.
+         *
+         * [parameters]
+         *
+         * array('upload' => $upload);
+         *
+         */
+        $params = array('upload' => $upload);
+        Pluf_Signal::send('IDF_Upload::create', 'IDF_Form_Upload',
+                          $params);
         return $upload;
     }
 }
diff --git a/src/IDF/Views/Download.php b/src/IDF/Views/Download.php
index 8af4249..972f286 100644
--- a/src/IDF/Views/Download.php
+++ b/src/IDF/Views/Download.php
@@ -152,6 +152,29 @@ class IDF_Views_Download
         if ($request->method == 'POST') {
             $fname = $upload->file;
             @unlink(Pluf::f('upload_path').'/'.$prj->shortname.'/files/'.$fname);
+            /**
+             * [signal]
+             *
+             * IDF_Upload::delete
+             *
+             * [sender]
+             *
+             * IDF_Form_UpdateUpload
+             *
+             * [description]
+             *
+             * This signal allows an application to perform a set of tasks
+             * just before the deletion of the corresponding object in the 
+             * database but just after the deletion from the storage.
+             *
+             * [parameters]
+             *
+             * array('upload' => $upload);
+             *
+             */
+            $params = array('upload' => $upload);
+            Pluf_Signal::send('IDF_Upload::delete', 
+                              'IDF_Views_Download', $params);
             $upload->delete();
             $request->user->setMessage(__('The file has been deleted.'));
             $url = Pluf_HTTP_URL_urlForView('IDF_Views_Download::index',