@@ -402,26 +404,23 @@
 	 * @return	categories
 	 */
 	function getPostCategories($value) {
-		
 		$fields	= 'catname';
-		$table	= 'tx_t3blog_cat';
-		$where	=  'deleted = 0 and hidden = 0 and uid = '.$value	;
+		$table	= 'tx_t3blog_cat, tx_t3blog_post_cat_mm';
+		$where	=  'deleted = 0 and hidden = 0 and uid_local = '.$value.' AND uid_foreign = tx_t3blog_cat.uid';
 		
 		// checks for posts only available on specific fe-users
 		$fe_groupCheck	= $GLOBALS['TSFE']->fe_user->groupData[uid];
 			
 		if(empty($fe_groupCheck)) {
 				
-			$where.= ' AND '.$table.'.fe_group = "0"';
+			$where.= ' AND tx_t3blog_cat.fe_group = 0';
 		} else {
-			$where.= ' AND ('.$table.'.fe_group = 0 OR '.$table.'.fe_group = '.$fe_groupCheck['1'].')';
+			$where.= ' AND (tx_t3blog_cat.fe_group = 0 OR tx_t3blog_cat.fe_group = '.$fe_groupCheck['1'].')';
 		}		
 
 		$res = $GLOBALS['TYPO3_DB']->exec_SELECTquery($fields, $table, $where);
-		$catlist = '';
 		while ($row = $GLOBALS['TYPO3_DB']->sql_fetch_assoc($res)) {
-			 
-			$data = $row['catname'];	
+			$data[] = $row['catname'];
 		}
 		return $data;
 	} 
@@ -515,7 +514,7 @@
 				
 		switch($field) {
 				
-			case 'author':				
+			case 'author':
 				if($value != '') {
 					if($this->localPiVars['value'] == $this->pi_getLL('rss_click_comment')) {
 						return '<author>'.$value.'</author>';
@@ -527,8 +526,6 @@
 				break;
 			
 			case 'cat':
-				$category = $this->getPostCategories($value);
-				return '<category>'.$category.'</category>';
 				break;
 			
 			case 'fk_post':
@@ -539,14 +536,16 @@
 			
 			case 'uid':
 				$newDate = $this->getDate($value);
-				$postid		= TYPE == 'Comments' ? $this->getFkPostID($value) : $value;
+				$postid = TYPE == 'Comments' ? $this->getFkPostID($value) : $value;
 				$day 	= strftime('%d', $date);
 				$month 	= strftime('%m', $date);
 				$year	= strftime('%Y', $date);
-													
+				$category = $this->getPostCategories($value);
+				$catLink =  '<category>'.implode(',', $category).'</category>';
 				return '<link>'.(stripos('http://',t3lib_div::getIndpEnv('HTTP_HOST'))?'':'http://').t3lib_div::getIndpEnv('HTTP_HOST').'/'.tslib_pibase::pi_getPageLink(t3blog_div::getBlogPid(), '', array('tx_t3blog_pi1[blogList][year]' => $year, 'tx_t3blog_pi1[blogList][month]' => $month, 'tx_t3blog_pi1[blogList][day]' => $day, 'tx_t3blog_pi1[blogList][showUid]' => $this->conf['feedItemLinkPrefix'].$postid)).'</link>
 	<guid>'.(stripos('http://',t3lib_div::getIndpEnv('HTTP_HOST'))?'':'http://').t3lib_div::getIndpEnv('HTTP_HOST').'/'.tslib_pibase::pi_getPageLink(t3blog_div::getBlogPid(), '', array('tx_t3blog_pi1[blogList][year]' => $year, 'tx_t3blog_pi1[blogList][month]' => $month, 'tx_t3blog_pi1[blogList][day]' => $day, 'tx_t3blog_pi1[blogList][showUid]' => $this->conf['feedItemLinkPrefix'].$postid)).'</guid>
-	<description></description>';
+	<description></description>
+	'.$catLink;
                 break;
 			
 			case 'text':