[TYPO3] no indexing although pages are written in cache_page

[Norbert Huber]

Hi all,

Don't know what im doing wrong. When i visit different pages the  
cache_page table is filled, but the page doesn't get indexed.
here is my setup

page.config{
#admPanel = 1
cache = 1
no_cache = 0
index_enable = 1
}

config{
#admPanel = 1
cache = 1
no_cache = 0
index_enable = 1
}

Also i tested different options (nothing, 0, -1) for
plugin.tx_indexedsearch.search.rootPidList =

TYPO3 version 4.1.5 tt_news 2.5.0 version with activated  
allow_caching and no Extension with $GLOBALS['TSFE']->set_no_cache();
Any Tips?
Thanks
Norbert