Tested OS : windows
Tested bundle : 6U4 PIT2
kernel jre: http://j2se.east/plugin/1.6.0_04-nightly/2007-08-06.13_45/windows-i586/jre-6u4-windows-i586-p-iftw-k.exe

Steps to reproduce:
1. Install kernel JRE build from the above location
2. Invoke java Control Panel and make sure it comes up
3. Reinstall the JRE
4. Click yes where the message comes up that the software is already installed in the system
5. After a while, machine reboot message comes up and there is no JRE in the system
6. As mentioned in the bug ID - 6569528, the following files - (lib/bundles, bin/kernel) are not removed from thre jre_install directory
Reinstalling kernel JRE removes kernel JRE from the system

Tested OS : windows
Tested bundle : 6U4 PIT2
kernel jre: http://j2se.east/plugin/1.6.0_04-nightly/2007-08-06.13_45/windows-i586/jre-6u4-windows-i586-p-iftw-k.exe

Steps to reproduce:
1. Install kernel JRE build from the above location
2. Invoke the Java Control Panel and make sure it comes up.
3. Now, re-install the JRE
4. Click yes for the message where it says that the software is already installed on the system.
5. After a while, system reboot message comes up, and the JRE is removed from the machine. Confirm this by going to add/remove programs in the control panel.

6. As mentined in Bug ID 6569528 - the following two folders - (lib/bundles, bin/kernel) are still there under jre installation directory
7. Reinstall the kernel JRE once more.
8. Invoke Java Control Planel. It does not come up. Instead, the follwing message comes up - "Could not find the main class. Program will exit."
9. Under the JRE installation location, many files are missing.

The following screen-shots are attached -
1. error message while invoking Java Control Panel
2. contents of jre/bin after reinstall
3. contents of jre/lib after reinstall

Ideally, reinstalling the JRE should be working, as the JRE was earlier practically removed from the system.