I got a wierd problem i cant figure out what is causing it

Little info background


Sugarcrm CE Versie 6.1.0
Os freebsd
php 5.2.5
mysql ver 14.12 distrib 5.0.41


In the opertiunitus module > advanced search in the selection field assigend to
there is alway the same person there. There should be more people in it.

What i have tried
Removed the user from sugar
removed the user from the database

still showing up .....


Set up test-setup

fresh install sugar crm import the database to the test-setup and it works like a charm problem not here

Did a fresh install of sugarcrm on the development machine- dumpt old database and import it again.

Problem shows up again...