Hi JG,
Norton Internet Security provides many solutions and features to handle viruses and other security threats. Norton Internet Security also informs you, through alerts and notifications, how viruses and other security threats are detected and resolved. When you perform important tasks on your computer, you likely would prefer not to receive any alert messages. Silent Mode suppresses alerts and notifications and temporarily suspends most of the background activities. If Norton Internet Security detects a security threat when Silent Mode is enabled, it does not display the alert but takes appropriate action to protect your computer. You can either turn on the silent mode manually or otherwise enable the full screen detection which will enable the silnt mode whenever any application opens in the fullscreen mode. You can view the summary of the Silent Mode sessions under the Full History category in the Security History window. This summary includes the type of Silent Mode, the time when Silent Mode is turned on and turned off, and the security activities that occurred during Silent Mode. I think, Pulse updates, Automatic LiveUpdate, System Activity Monitoring by SONAR and Norton Insight/Community watch will be suspended for time being and will resume once you exit from Full screen mode or disable the Silent Mode accordingly.
Yogesh
