Hi, I have been using NOD32 v2.7 for about a year and a half. Lately, about once a week or so, the sys tray icon fails to appear on boot up. If there is a definitions update, it appears in a dialog box on the center of the screen rather than the customary balloon pop up just above the sys tray icon which is not there. I solve the problem by going to the main menu and clicking Control Panel, where upon the control panel appears along with the sys tray icon. I click off the control panel and all is well for another week or so. Has anyone experienced this and can you offer a remedy?