diff --git a/framework/console/CommandRunner.php b/framework/console/CommandRunner.php
index 10ca0e7..1a6ed55 100644
--- a/framework/console/CommandRunner.php
+++ b/framework/console/CommandRunner.php
@@ -16,8 +16,6 @@ namespace yii\console;
  * @property string $scriptName The entry script name.
  *
  * @author Qiang Xue <qiang.xue@gmail.com>
- * @version $Id: CConsoleCommandRunner.php 3426 2011-10-25 00:01:09Z alexander.makarow $
- * @package system.console
  * @since 2.0
  */
 class CommandRunner extends \yii\base\Component
diff --git a/framework/console/HelpCommand.php b/framework/console/HelpCommand.php
index 42e7e28..e97ac42 100644
--- a/framework/console/HelpCommand.php
+++ b/framework/console/HelpCommand.php
@@ -26,8 +26,6 @@ namespace yii\console;
  * @property string $help The command description.
  *
  * @author Qiang Xue <qiang.xue@gmail.com>
- * @version $Id: CHelpCommand.php 3426 2011-10-25 00:01:09Z alexander.makarow $
- * @package system.console
  * @since 2.0
  */
 class HelpCommand extends Command
diff --git a/framework/db/Migration.php b/framework/db/Migration.php
index 1784e84..8a22918 100644
--- a/framework/db/Migration.php
+++ b/framework/db/Migration.php
@@ -28,8 +28,6 @@
  * applying migrations.
  *
  * @author Qiang Xue <qiang.xue@gmail.com>
- * @version $Id: CDbMigration.php 3218 2011-05-13 00:06:44Z alexander.makarow $
- * @package system.db
  * @since 2.0
  */
 abstract class CDbMigration extends yii\base\Component
diff --git a/framework/db/ar/ActiveRecord.php b/framework/db/ar/ActiveRecord.php
index da5d609..cff8532 100644
--- a/framework/db/ar/ActiveRecord.php
+++ b/framework/db/ar/ActiveRecord.php
@@ -51,8 +51,6 @@ $post->save();
  * about this class.
  *
  * @author Qiang Xue <qiang.xue@gmail.com>
- * @version $Id: ActiveRecord.php 3344 2011-07-06 22:04:50Z alexander.makarow $
- * @package system.db.ar
  * @since 2.0
  *
  * @property array $attributes
@@ -1861,8 +1859,6 @@ abstract class ActiveRecord extends \yii\base\Model
 /**
  * CBaseActiveRelation is the base class for all active relations.
  * @author Qiang Xue <qiang.xue@gmail.com>
- * @version $Id: ActiveRecord.php 3344 2011-07-06 22:04:50Z alexander.makarow $
- * @package system.db.ar
  */
 class CBaseActiveRelation extends CComponent
 {
@@ -2001,8 +1997,6 @@ class CBaseActiveRelation extends CComponent
 /**
  * CStatRelation represents a statistical relational query.
  * @author Qiang Xue <qiang.xue@gmail.com>
- * @version $Id: ActiveRecord.php 3344 2011-07-06 22:04:50Z alexander.makarow $
- * @package system.db.ar
  */
 class CStatRelation extends CBaseActiveRelation
 {
@@ -2037,8 +2031,6 @@ class CStatRelation extends CBaseActiveRelation
 /**
  * CActiveRelation is the base class for representing active relations that bring back related objects.
  * @author Qiang Xue <qiang.xue@gmail.com>
- * @version $Id: ActiveRecord.php 3344 2011-07-06 22:04:50Z alexander.makarow $
- * @package system.db.ar
  * @since 2.0
  */
 class CActiveRelation extends CBaseActiveRelation
@@ -2130,8 +2122,6 @@ class CActiveRelation extends CBaseActiveRelation
 /**
  * CBelongsToRelation represents the parameters specifying a BELONGS_TO relation.
  * @author Qiang Xue <qiang.xue@gmail.com>
- * @version $Id: ActiveRecord.php 3344 2011-07-06 22:04:50Z alexander.makarow $
- * @package system.db.ar
  * @since 2.0
  */
 class CBelongsToRelation extends CActiveRelation
@@ -2142,8 +2132,6 @@ class CBelongsToRelation extends CActiveRelation
 /**
  * CHasOneRelation represents the parameters specifying a HAS_ONE relation.
  * @author Qiang Xue <qiang.xue@gmail.com>
- * @version $Id: ActiveRecord.php 3344 2011-07-06 22:04:50Z alexander.makarow $
- * @package system.db.ar
  * @since 2.0
  */
 class CHasOneRelation extends CActiveRelation
@@ -2159,8 +2147,6 @@ class CHasOneRelation extends CActiveRelation
 /**
  * CHasManyRelation represents the parameters specifying a HAS_MANY relation.
  * @author Qiang Xue <qiang.xue@gmail.com>
- * @version $Id: ActiveRecord.php 3344 2011-07-06 22:04:50Z alexander.makarow $
- * @package system.db.ar
  * @since 2.0
  */
 class CHasManyRelation extends CActiveRelation
@@ -2209,8 +2195,6 @@ class CHasManyRelation extends CActiveRelation
 /**
  * CManyManyRelation represents the parameters specifying a MANY_MANY relation.
  * @author Qiang Xue <qiang.xue@gmail.com>
- * @version $Id: ActiveRecord.php 3344 2011-07-06 22:04:50Z alexander.makarow $
- * @package system.db.ar
  * @since 2.0
  */
 class CManyManyRelation extends CHasManyRelation
@@ -2222,8 +2206,6 @@ class CManyManyRelation extends CHasManyRelation
  * ActiveRecordMetaData represents the meta-data for an Active Record class.
  *
  * @author Qiang Xue <qiang.xue@gmail.com>
- * @version $Id: ActiveRecord.php 3344 2011-07-06 22:04:50Z alexander.makarow $
- * @package system.db.ar
  * @since 2.0
  */
 class ActiveRecordMetaData
diff --git a/framework/db/ar/ActiveRecordBehavior.php b/framework/db/ar/ActiveRecordBehavior.php
index 765e278..6971cde 100644
--- a/framework/db/ar/ActiveRecordBehavior.php
+++ b/framework/db/ar/ActiveRecordBehavior.php
@@ -14,8 +14,6 @@
  * that are only defined by {@link CActiveRecord}.
  *
  * @author Qiang Xue <qiang.xue@gmail.com>
- * @version $Id: CActiveRecordBehavior.php 2799 2011-01-01 19:31:13Z qiang.xue $
- * @package system.db.ar
  * @since 2.0
  */
 class CActiveRecordBehavior extends CModelBehavior
diff --git a/framework/logging/ProfileTarget.php b/framework/logging/ProfileTarget.php
index 52401fd..eb04b98 100644
--- a/framework/logging/ProfileTarget.php
+++ b/framework/logging/ProfileTarget.php
@@ -21,8 +21,6 @@
  * </ul>
  *
  * @author Qiang Xue <qiang.xue@gmail.com>
- * @version $Id: CProfileLogRoute.php 3204 2011-05-05 21:36:32Z alexander.makarow $
- * @package system.logging
  * @since 2.0
  */
 class CProfileLogRoute extends CWebLogRoute
diff --git a/framework/logging/WebTarget.php b/framework/logging/WebTarget.php
index f666841..ede5d3f 100644
--- a/framework/logging/WebTarget.php
+++ b/framework/logging/WebTarget.php
@@ -15,8 +15,6 @@
  * or in FireBug console window (if {@link showInFireBug} is set true).
  *
  * @author Qiang Xue <qiang.xue@gmail.com>
- * @version $Id: CWebLogRoute.php 3001 2011-02-24 16:42:44Z alexander.makarow $
- * @package system.logging
  * @since 2.0
  */
 class CWebLogRoute extends CLogRoute
diff --git a/framework/validators/DateValidator.php b/framework/validators/DateValidator.php
index 15c7509..f3309f2 100644
--- a/framework/validators/DateValidator.php
+++ b/framework/validators/DateValidator.php
@@ -16,8 +16,6 @@ namespace yii\validators;
  * must be in. If the given date value doesn't follow the format, the attribute is considered as invalid.
  *
  * @author Qiang Xue <qiang.xue@gmail.com>
- * @version $Id: CDateValidator.php 2799 2011-01-01 19:31:13Z qiang.xue $
- * @package system.validators
  * @since 2.0
  */
 class CDateValidator extends Validator
diff --git a/framework/validators/ExistValidator.php b/framework/validators/ExistValidator.php
index 1ce8504..10f4e82 100644
--- a/framework/validators/ExistValidator.php
+++ b/framework/validators/ExistValidator.php
@@ -16,8 +16,6 @@ namespace yii\validators;
  * that can be found in the foreign table.
  *
  * @author Qiang Xue <qiang.xue@gmail.com>
- * @version $Id: CExistValidator.php 2799 2011-01-01 19:31:13Z qiang.xue $
- * @package system.validators
  * @since 2.0
  */
 class CExistValidator extends Validator
diff --git a/framework/validators/FileValidator.php b/framework/validators/FileValidator.php
index 85e59a7..448be36 100644
--- a/framework/validators/FileValidator.php
+++ b/framework/validators/FileValidator.php
@@ -40,8 +40,6 @@ namespace yii\validators;
  * You can use {@link CFileValidator} to validate the file attribute.
  *
  * @author Qiang Xue <qiang.xue@gmail.com>
- * @version $Id: CFileValidator.php 2799 2011-01-01 19:31:13Z qiang.xue $
- * @package system.validators
  * @since 2.0
  */
 class CFileValidator extends Validator
diff --git a/framework/validators/UniqueValidator.php b/framework/validators/UniqueValidator.php
index bd99e7f..ef13e26 100644
--- a/framework/validators/UniqueValidator.php
+++ b/framework/validators/UniqueValidator.php
@@ -13,8 +13,6 @@ namespace yii\validators;
  * CUniqueValidator validates that the attribute value is unique in the corresponding database table.
  *
  * @author Qiang Xue <qiang.xue@gmail.com>
- * @version $Id: CUniqueValidator.php 3260 2011-06-13 20:56:54Z alexander.makarow $
- * @package system.validators
  * @since 1.0
  */
 class CUniqueValidator extends Validator