how to enable normal pasting in FCKEditor

Edit extensions/FCKeditor/fckeditor_config.js and add:

FCKConfig.AutoDetectPasteFromWord = true;
FCKConfig.CleanWordKeepsStructure = false;
FCKConfig.ForcePasteAsPlainText = false;

bonus

You can also enabled indenting and outdenting bulleted list items by adding 'Outdent','Indent" to the button configuration.

bonus 2

If you installed FCKeditor and you get an error that says,

Detected bug in an extension! Hook FCKeditor_MediaWiki::onCustomEditor failed to return a value; should return true to continue hook processing or false to abort. Backtrace:

#0 /usr/share/mediawiki/includes/Wiki.php(502): wfRunHooks('CustomEditor', Array)
#1 /usr/share/mediawiki/includes/Wiki.php(63): MediaWiki->performAction(Object(OutputPage), Object(Article), Object(Title), Object(User), Object(WebRequest))
#2 /usr/share/mediawiki/index.php(116): MediaWiki->initialize(Object(Title), Object(Article), Object(OutputPage), Object(User), Object(WebRequest))
#3 {main}

find the file called FCKeditor.body.php and change a certain line of code as follows:

Before:

public function onCustomEditor(&$article, &$user) {

After:

public function onCustomEditor($article, $user) {