Problem 1:
Java Kernel Not working on Vista - Error while installing additional components due to permission problem. (Exception attched)

Problem 2:
BackgroundDownload is not happening. Starting manually (java sun.misc.BackgroundDownloader ) showing following output.
"Unable to acquire background download mutex"


java.io.IOException: unable to rename C:\Program Files\Java\jre1.6.0\bin\dcpr.dll.tmp to C:\Program Files\Java\jre1.6.0\bin\dcpr.dll
       at sun.misc.DownloadManager$Bundle.unpackBundle(Unknown Source)
       at sun.misc.DownloadManager$Bundle.install(Unknown Source)
       at sun.misc.DownloadManager$Bundle.install(Unknown Source)
       at sun.misc.DownloadManager.doGetBootClassPathEntryForResource(Unknown Source)
       at sun.misc.DownloadManager.access$1500(Unknown Source)
       at sun.misc.DownloadManager$3.run(Unknown Source)
       at java.security.AccessController.doPrivileged(Native Method)
       at sun.misc.DownloadManager.getBootClassPathEntryForResource(Unknown Source)
       at sun.misc.DownloadManager.getBootClassPathEntryForClass(Unknown Source)
       at java.lang.ClassLoader.findBootstrapClass(Native Method)
       at java.lang.ClassLoader.findBootstrapClass0(Unknown Source)
       at java.lang.ClassLoader.loadClass(Unknown Source)
       at java.lang.ClassLoader.loadClass(Unknown Source)
       at sun.misc.Launcher$AppClassLoader.loadClass(Unknown Source)
       at java.lang.ClassLoader.loadClass(Unknown Source)
       at java.lang.ClassLoader.loadClassInternal(Unknown Source)
       at Test.main(Test.java:4)
Error downloading bundle for java/awt/Button.class:
java.io.FileNotFoundException: C:\Program Files\Java\jre1.6.0\lib\bundles\java_awt.zip (The system cannot find the file specified)
       at java.io.FileInputStream.open(Native Method)
       at java.io.FileInputStream.<init>(Unknown Source)
       at sun.misc.DownloadManager$Bundle.unpackBundle(Unknown Source)
       at sun.misc.DownloadManager$Bundle.install(Unknown Source)
       at sun.misc.DownloadManager$Bundle.install(Unknown Source)
       at sun.misc.DownloadManager.doGetBootClassPathEntryForResource(Unknown Source)
       at sun.misc.DownloadManager.access$1500(Unknown Source)
       at sun.misc.DownloadManager$3.run(Unknown Source)
       at java.security.AccessController.doPrivileged(Native Method)
       at sun.misc.DownloadManager.getBootClassPathEntryForResource(Unknown Source)
       at sun.misc.DownloadManager.getBootClassPathEntryForClass(Unknown Source)
       at sun.misc.Launcher$ExtClassLoader.findClass(Unknown Source)
       at java.lang.ClassLoader.loadClass(Unknown Source)
       at java.lang.ClassLoader.loadClass(Unknown Source)
       at sun.misc.Launcher$AppClassLoader.loadClass(Unknown Source)
       at java.lang.ClassLoader.loadClass(Unknown Source)
       at java.lang.ClassLoader.loadClassInternal(Unknown Source)
       at Test.main(Test.java:4)
Exception in thread "main" java.lang.NoClassDefFoundError: java/awt/Button
       at Test.main(Test.java:4)
2nd Problem may be becs there will be alreadu one BackgroundDownloader running. (which acquired the mutex) But in any case bundle downloading is not happening. I tried in another m/c wher bundle download happens but installation fails with the same error (rename problem)