Automatic index - by: antoineCNAV

hi all!
Saluti a tutti!
Bonjour à tous!

Here is my problem.
I can't manage to index automatically.
Nor full text nor intro field.

I always have to go to back-office and index manually.
and there the search works perfectly.

Is there a configuration I'm missing?

I'm working on Joomla 2.5.8
My Jifile is the last one, the 2.1
I'm on windows 7 32 bits.
Joomla is installed locally

Thanks!
Grazie!
Merci!