diff --git a/core/src/main/java/hudson/model/AbstractProject.java b/core/src/main/java/hudson/model/AbstractProject.java
index 869c2d824502ea63c98332e48106b708867a63c3..21026297a1534b8322262c36ac462fa4592e9121 100644
--- a/core/src/main/java/hudson/model/AbstractProject.java
+++ b/core/src/main/java/hudson/model/AbstractProject.java
@@ -26,7 +26,6 @@
  */
 package hudson.model;
 
-import java.util.regex.Matcher;
 import java.util.regex.Pattern;
 import antlr.ANTLRException;
 import hudson.AbortException;
diff --git a/core/src/main/java/hudson/model/Hudson.java b/core/src/main/java/hudson/model/Hudson.java
index 4c650d5504e29536a1f5be7de4d94185c4a08130..7b056b5570959b62370a3d5c38636e2640ae8120 100644
--- a/core/src/main/java/hudson/model/Hudson.java
+++ b/core/src/main/java/hudson/model/Hudson.java
@@ -2459,7 +2459,6 @@ public final class Hudson extends Node implements ItemGroup<TopLevelItem>, Stapl
     }
 
     public synchronized void doTestPost( StaplerRequest req, StaplerResponse rsp ) throws IOException, ServletException {
-        JSONObject form = req.getSubmittedForm();
         rsp.sendRedirect("foo");
     }
 
diff --git a/core/src/main/java/hudson/model/JDK.java b/core/src/main/java/hudson/model/JDK.java
index 3c2401e4e330ad851ed7610ff7729d687fd7eddf..a32c421d014f6aca21568e0a6f954f05852aaaaf 100644
--- a/core/src/main/java/hudson/model/JDK.java
+++ b/core/src/main/java/hudson/model/JDK.java
@@ -29,7 +29,6 @@ import hudson.util.FormValidation;
 import hudson.Launcher;
 import hudson.Extension;
 import hudson.EnvVars;
-import hudson.Util;
 import hudson.slaves.NodeSpecific;
 import hudson.tools.ToolInstallation;
 import hudson.tools.ToolDescriptor;
diff --git a/core/src/main/java/hudson/model/Run.java b/core/src/main/java/hudson/model/Run.java
index f2514b93e07f06c2a80352e20296933ba4a36353..1617d06076e5d057c507909e96ee79257705fa09 100644
--- a/core/src/main/java/hudson/model/Run.java
+++ b/core/src/main/java/hudson/model/Run.java
@@ -61,8 +61,6 @@ import hudson.util.ProcessTree;
 import java.io.BufferedReader;
 import java.io.File;
 import java.io.FileInputStream;
-import java.io.FileNotFoundException;
-import java.io.FilterOutputStream;
 import java.io.IOException;
 import java.io.InputStream;
 import java.io.InputStreamReader;
diff --git a/core/src/main/java/hudson/security/ACL.java b/core/src/main/java/hudson/security/ACL.java
index 5f4be83c9a86c3b76983600f2d50c5b39e83091e..596a706abfb342c94874eebfa80685886bab7fe2 100644
--- a/core/src/main/java/hudson/security/ACL.java
+++ b/core/src/main/java/hudson/security/ACL.java
@@ -35,7 +35,7 @@ import hudson.model.Executor;
  * Gate-keeper that controls access to Hudson's model objects.
  *
  * @author Kohsuke Kawaguchi
- * @see http://hudson.gotdns.com/wiki/display/HUDSON/Making+your+plugin+behave+in+secured+Hudson
+ * @see http://wiki.hudson-ci.org/display/HUDSON/Making+your+plugin+behave+in+secured+Hudson
  */
 public abstract class ACL {
     /**
diff --git a/core/src/main/java/hudson/slaves/ComputerLauncher.java b/core/src/main/java/hudson/slaves/ComputerLauncher.java
index 99fe69366f1c6c99a15074fdef171f9cac1c1c22..9307a5e35508265ddea907d88c7f8aeb27d94f56 100644
--- a/core/src/main/java/hudson/slaves/ComputerLauncher.java
+++ b/core/src/main/java/hudson/slaves/ComputerLauncher.java
@@ -30,13 +30,10 @@ import hudson.model.Computer;
 import hudson.model.Hudson;
 import hudson.model.TaskListener;
 import hudson.remoting.Channel;
-import hudson.remoting.Channel.Listener;
 import hudson.util.DescriptorList;
 import hudson.util.StreamTaskListener;
 
 import java.io.IOException;
-import java.io.InputStream;
-import java.io.OutputStream;
 
 /**
  * Extension point to allow control over how {@link Computer}s are "launched",
diff --git a/core/src/main/java/hudson/tasks/junit/History.java b/core/src/main/java/hudson/tasks/junit/History.java
index 29e00f73b269e5ef1d29822aa40cf69ace1799a5..fe952681416377d62d1330307bb6d7d4aaf8b805 100644
--- a/core/src/main/java/hudson/tasks/junit/History.java
+++ b/core/src/main/java/hudson/tasks/junit/History.java
@@ -1,7 +1,7 @@
 /*
  * The MIT License
  *
- * Copyright (c) 2004-2009, Sun Microsystems, Inc., Tom Huybrechts, Yahoo!, Inc.
+ * Copyright (c) 2004-2010, Sun Microsystems, Inc., Tom Huybrechts, Yahoo!, Inc., Seiji Sogabe
  *
  * Permission is hereby granted, free of charge, to any person obtaining a copy
  * of this software and associated documentation files (the "Software"), to deal
@@ -50,7 +50,6 @@ import org.jfree.chart.renderer.category.StackedAreaRenderer;
 import org.jfree.data.category.CategoryDataset;
 import org.jfree.ui.RectangleInsets;
 import org.kohsuke.stapler.Stapler;
-import org.kohsuke.stapler.StaplerRequest;
 
 /**
  * History of {@link hudson.tasks.test.TestObject} over time.