I noticed that my computer's login/logout/overall window start up has taken a huge blow. while i dont mind much of my window start up. logging in and out takes forever! also switching screen names also lags a lot. does anyone know what may be causing this or tips on things that can reduce the time. i remember my computer use to do it instantly. also i noticed one of my start up thingies does not have an icon, as if like it's missing. could that be an issue?