[FLOW3-general] cannot get objects from repository

[Thomas Mammitzsch]

hi list,

i have a database table filled by a flow command controller (around 160k 
rows). That worked like a charm.
When i try to get Objects from the repository via frontend controller, i 
always get empty results (no obvious errors) for like or equals queries. 
Even if i use the standard findAll() method (i know that would be too 
many results to handle). Query rows by f.e. phpMyAdmin works fine.

doctrine:validate and doctrine:entitystatus show no errors. 
doctrine:migrate says there is no migration necessary. What may be wrong?

regards, Thomas