Windows XP Professional w/all updates... Sony Vaio PCG series laptop... System tray shows 3 icons (indexing, network connections, power manager) although there should be more; running #11 Repair Icons corrects situation so 8 icons show (indexing, network connections, power manager + Quick Time, safely remove hdwr., remaining charge %, MSecurity Essentials, Autosizer). Upon reboot, original 3 icons appear. Said another way, #11 Repair Icons works; however, repair is not permanent. Ideas? Thank you.