i have to users which are getting followed failure message on the Client 8.0.1 HP1 on Windows (i try to translate from german):

* * *
Internal Addressbook-Failure

internal failure - found one addressbook double. the double one where ignored. Problem is a faulty User-DB or dictonary.
* * *

i tried gwcheck with content and index.

which one should i try next, without loosing any data - recreate User DB ?