Disable Google chat in GMail easily

Disabling the google chat in Gmail is a very easy and can be done by even Computer beginners. Time mismatch between the GMail server time and the system time would just do the trick with ease. The GMail server checks for the correct date in the system's date and if it is right then the chat will work as usual. But now, if there is a wide disparity in the system time and the GMail server time then the chat would simply be disabled. So, the steps to be followed are:

1. Change your system date and time to 1 year before the actual date. For example, if the date is 11-07-2010 (DD-MM-YYYY), you need to change it to July 2009. Remember that you need the administrator privileges.
2. Login into your gmail account with your username and passsword and you would see that the chat is acutally disabled.

       Enjoy this new trick.