I've been using Eset for quite awhile and am now on ESS V. 3.0.672.0. ESS is set for automatic updates. I assumed that this meant the daily data files (which it does) BUT also engine updates (which it doesn't seem to do.) Also do I want to update to V4? AND does the above apply to Vista and XP PRO? Been hearing that it causes trouble for some and works fine for others. Please someone enlighten me.