Uninstall fails to clean Update->Policy reg key with UAC ON for admin and non admin user. After that, when you try to reinstall, update schedule will be same as it was in last installaiton. Update schedule will be picked from the preious leftover reg keys.

How to reproduce
1.) Uninstall all JREs and Clean all the registry keys for Java soft from HKLM and virtual store
2.) Install JRE
3.) Open JCP and go to update tab
4.) Note the Update schedule.
5.) Change the update schedule to daily and different hour from the default
6.) Uninstall JRE
7.) do step 2 to 4

Expected behavior:
Everytime you install JRE, it should provide a new and unique/differe update schedule.

Actual Behavior:
update schedule will be same as it was in last installaiton

The reason for this is, uninstall fails to clean registry under following node.
HKLM\SOFTWARE\JavaSoft\Java Update\Policy
HKUSER OR HKCR OR HKCU \..\VirtualStore\MACHINE\SOFTWARE\JavaSoft\Java Update\Policy

And next when JRE is installed, update schedule will be read from the above mentioned nodes.