Dalla Knowledge Base MS ecco aluni articoli che riguardano il problema dell'utilizzo eccessivo della CPU da parte di Word:WD2000: Word Uses 100 Percent of the CPU   (211443) - While you work in Microsoft Word 2000, a Central Processing Unit (CPU) usage monitor may show the CPU is running at or near 100 percent on some computers. This symptom occurs even while you are performing operations that are not perceived as CPU...http://support.microsoft.com/default.aspx?scid=kb;en-us;211443 WD9 
Leggi tutto il post...