Google Ad sense sign up error

Problem:
Error
We apologize for the inconvenience, but we are unable to process your request at this time. Our engineers have been notified of this problem and will work to resolve it.

Solution:
This problem occurs when you retry same thing again and again. So you need to sign out from the google account reopen the browser possibly open Internet Explorer and clear cookies and cache then try to sign up again. It will work.
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How to set Java CLASSPATH Environment variable

Set Java Environment Variable on Windows 7 and Windows vista
Right click on My Computer, go to properties and then click on Advanced System Settings.
Now click on Environment Variables , Add JAVA_HOME path in system variables and then change Path system variable to add one more path. Details are described in below picture.
Set Java Environment Variable on Windows XP
Right click on My Computer, go to properties and then click on Advanced.
Now click on Environment Variables , Add JAVA_HOME path in system variables and then change Path system variable to add one more path. Details are described in below picture.

Set Java Environment Variable on Ubuntu/Unix
Edit .bashrc file in the home directory and add following lines at the end. Note JAVA_HOME should point to your jdk installation directory.
export JAVA_HOME=/usr/lib/jvm/java-6-sun
export PATH=$PATH:$JAVA_HOME/bin

To check whether path has been set correctly or not type echo $JAVA_HOME at the command prompt, you should get result /usr/lib/jvm/java-6-sun.
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