thanks!
It's incredible what Apple has told me, let me paste it (first in spanish and then a translation to english...):
Revisadas las notas de su caso, compruebo que el problema solo lo tiene en documentos office que son de Microsoft. Esto es un comportamiento normal del Spotlight, que va indexar en las aplicaciones de Apple, titulo y contenido y en aplicaciones de tercera parte como es Microsoft Office para Mac, solo el titulo de los archivos, ya que el sistema operativo no sabe leer dentro de estos archivos creados con aplicaciones de Microsoft, que pueden funcionar en un equipo con sistema operativo Mountain Lion, pero no sabe interpretar lo que contiene. Por ejemplo en Pages, Numbers y Keynote, si indexa el contenido. Resumiendo, solo las aplicaciones de Apple tendrán todo su contenido y titulo indexado en Spotlight, y las aplicaciones no de Apple, solo el titulo.
Revised the case notes, I see that the only problem is with Microsoft office documents. This is normal behaviour of Spotlight, which index title and content in Apple applications, but in third-party applications such as Microsoft Office for Mac, only the title of the files are indexed. Because the operating system can not read within these files created with Microsoft applications, which can run on a computer with Mountain Lion operating system, but you can not interpret what it contains. For example in Pages, Numbers and Keynote spotlight indexes the content. In short, only Apple applications have all your content and title indexed in Spotlight, and not Apple applications, only the title.
I have told them that another user has tested the problem for me in his mac, and yes, spotlight index inside Microsoft Office Documents.
Would you mind to repeat the test and make a couple of screen captures? one with your system information (os x version etc), and another with the spotlight inside-search finding the office file containing the text searched.
Pd: the thing that really makes me angry is how the try to fool me
Again, thanks for your time and sorry for my English.
Greetings
Carlos