Spotlight with index drop outs
On OSX.6.8 Server.
(There is a folder structure existing and not modified since beginning of the year. A calendar-like hierarchical structure with a folder 2012 on top, then months 01,02....12 and then days 01, 02 etc)
Spotlight seems not to index all folders correctly. I cannot find files, which should be obviously found with a content search.
It looks like, that in some folders nothing can be found, also with "simple" searches which must produce results.
I have restarted the Server, repaired permissions, reindexed Spotlight with sudo mdutil -E / but no improvement. Spotlight seems to be "blind" on several spots.
What need to bee done?
MacBook Pro, Mac OS X (10.6.8)