The setting he refered to in the above quote tells the machine to run the process for the setting even if it has not changed. Policy is only processed when the policy that is available on the server is different from that of the one previously downloaded. If a user changes there homepage, the policy on the client is not changed, cause the user changing it rights it to the HKUser\Policies\ID registry, and not the policy registry. So without enabling these "Process even if group policy has not changed" setting, the policy would not be re-evaluated. This means that a users home page will be set by GP, they can go in a change it, for the length of the session, but next time the policy is refreshed, either by background refresh, or on next logon, then the homepage will be reset to the administrators choice.
Is that clearer? I waffle alot.
Hope this Helps.
Neil J Cotton
njc Information Systems
Systems Consultant