Apple even has a tech support document or two for just for such a question: <http://docs.info.apple.com/article.html?artnum=107393> <http://docs.info.apple.com/article.html?artnum=107392> which sez: >A Safe Boot is a special way to start Mac OS X when troubleshooting. Safe Mode is the state Mac OS X is in after a Safe Boot. Starting up into Safe Mode does three things to simplify the startup and operation of your computer: > > * It forces a directory check of the startup (boot) volume. > * It loads only required kernel extensions (some of the items in /System/Library/Extensions). > * It runs only Apple-installed startup items (some of the items in /Library/Startup Items and /System/Library/Startup items - and different than login items). > > >Taken together, these changes can work around issues caused by software or directory damage on the startup volume. > > >Some features do not work in Safe Mode > >Safe Mode can be useful for troubleshooting an issue. However, certain Mac OS X features do not work when you are started up in Safe Mode. For example, you cannot use DVD Player, capture video in iMovie, use an AirPort card, use some audio input or output devices, or use an internal or external USB modem. Use Safe Mode only if you need to troubleshoot a startup issue. Dieder