Problem Description : Jinstall should prompt error message when unable to connect to network and should cancel the installation when cancel button is pressed.

Tested_Java_Release : /net/koori.sfbay/onestop/jdk/1.4.1_03
Tested_Build : Jinstall
Tested_Build_Location : /net/koori.sfbay/onestop/jdk/1.4.1_03
Tested_Machine_Name : Windows XP / Windows 2000

Steps to Reproduce :

1.) While installing java using jinstall mechanism disconnect the
    network by changing the proxy or disconnect the ethernet cable
or
 try to load an applet from the following website and disconnect the network

 http://java.sun.com/j2se/5.5.5/plugin-test.html

Rewsult : Jinstall dialog box would keep on trying without prompting an error message, moreover if you hit cancel it ignores and hangs.
The only way to stop the process was to kill the process thru task manager.

Now that we have the proper error messages for Java Update failures, we should have the same for jinstall too.