Hi, I have this problem at work were some computer take 20/30 minutes to unlock after pressing ctrl+alt+del. Sometimes users are forced to shutdown their computers and reboot. This issue happens randomly, so sometimes could take the usual few seconds to unlock. Our environment: The computers lock automatically after left unattended for more than 15 minutes The computers are part of a windows 2003 domain They are XP pro SP2 fully patched They have Office 2003, TrendMicro, DeviceWall, IE6 The computer are all HP, some laptop and some desktop of different ages. If someone have any idea what this problem could be, I would really appreciate some help Thanks