OS with service pack: Windows 2003 Service Pack2
OS Locale: EN_US
Browser and version: Mozilla/5.0 (Windows; U; Windows NT 5.2; en-US; rv:1.7.13) Gecko/20060414
Test Results: When I tried to cancel the download it shows error on screen
Screen Shorts: The Error message is attached.
Exact steps to reproduce failure:

1. Install JRE Kernel
2. Launch the web page: http://mymachine1.india.sun.com/BugATon/RegistrationApplet.html
3. It downloads the components
4. Keep on clicking cancel button.
5. It throws the error shown in the attachment.