diff --git a/YACOSWeb/src/org/yacos/web/author/controller/ArticleDeleteController.java b/YACOSWeb/src/org/yacos/web/author/controller/ArticleDeleteController.java
index 393a787..84f1854 100644
--- a/YACOSWeb/src/org/yacos/web/author/controller/ArticleDeleteController.java
+++ b/YACOSWeb/src/org/yacos/web/author/controller/ArticleDeleteController.java
@@ -2,16 +2,17 @@ package org.yacos.web.author.controller;
 
 import javax.servlet.http.HttpServletRequest;
 import javax.servlet.http.HttpServletResponse;
+
 import org.springframework.web.servlet.ModelAndView;
 import org.springframework.web.servlet.ModelAndViewDefiningException;
 import org.springframework.web.servlet.mvc.Controller;
 import org.springframework.web.servlet.view.RedirectView;
 import org.yacos.core.article.Article;
 import org.yacos.core.article.IArticleManager;
+import org.yacos.core.users.IUserManager;
 
 public class ArticleDeleteController implements Controller {
 	private IArticleManager articleManager;
-
 	public IArticleManager getArticleManager() {
 		return articleManager;
 	}
@@ -20,6 +21,16 @@ public class ArticleDeleteController implements Controller {
 		this.articleManager = articleManager;
 	}
 
+	private IUserManager userManager;
+	public IUserManager getUserManager() {
+		return userManager;
+	}
+
+	public void setUserManager(IUserManager userManager) {
+		this.userManager = userManager;
+	}
+
+	
 	public ModelAndView handleRequest(HttpServletRequest request,
 			HttpServletResponse response) throws Exception {
 
@@ -32,7 +43,11 @@ public class ArticleDeleteController implements Controller {
 			if(article == null){
 				return new ModelAndView(new RedirectView("404error.htm"));
 			}
-
+	
+			if(articleManager.getPreferencesForArticle(articleId)!= null
+					|| userManager.getPCMemberForArticle(articleId)!= null){
+					return new ModelAndView(new RedirectView("manageArticle.htm?delete=ko"));
+				}
 			articleManager.removeArticle(articleId);
 
 		} 
@@ -43,4 +58,5 @@ public class ArticleDeleteController implements Controller {
 		return new ModelAndView(new RedirectView("manageArticle.htm?delete=ok"));
 	}
 
+	
 }
\ No newline at end of file