Can't Extend Time

My two kids each have their own computer (Windows 7 Ultimate 32-bit, IE 8.0.7600.16385, NIS 2010 17.7.0.12) with Norton Safety Minder 2.0.0.48 installed.  Norton Safety Minder has been working trouble-free for us since I initially installed it on June 13, 2010.  However, I noticed this afternoon that I can no loner extend time by clicking the Paw icon (i.e., which shows active), then clicking on "Extend Time".  When I click "Extend Time", the parent login window quickly flashes and disappears.  This happens on both my kids' computers.  This problem seems to have just begun very recently because I remember extending time at least once in the past week or so.  On one of the two computers experiencing the problem, I uninstalled Norton Safety Minder, rebooted, then reinstalled the program and the symptom continues.  My workaround for now is to more actively manage time limits via Norton Online Family.