Curfew and Time Restrictions NOT WORKING!

Have have gone through all the posting, and CAN find people having similar issues, but NO ONE actually posting how to resolve it. I am paying for PREMIER service, my son has a LIMITED login account sign-on on an XP computer. He has been able to just ignore the "Time has been reached" messages and continue to use whatever applications he has active. The attachment shows screen shots with him staying on up to 2am, His curfew is 11:00pm the night before. - The computer is running the latest Minder software. Your system needs to be re-evaluated immediately. Or else why buy this? - You can see on one of the screen shots (February 1) that he was on the computer for 7 hours. In his profile, he is only allowed 3 hours. How can this be? There is a serious problem with this program. Not shown on the screen is January days reflecting the same thing - time limited exceeding both length of time and and clock hours ("after-hours"). - He is telling there are no pop-ups blocking him. I do not know what to believe since I have not seen the actual activity. I just know that the computer is set-up correctly because this is my profession. I know computers, and I know that this software is not doing what it is supposed to be doing. -I need an email address to send you screen shots. This forum community will not allow me to send screen shots in a DOC file format.