Is this still happening?

I go 10 days looking for solutions without success.

I'm frustrated. I'm thinking of retiring.

Please. ¿Some suggestion?

Thanks.

I've tried with outlook and i get the same.

I have seen in log:
INFO:   Finished sync of database card. Failures: 1; changes from 
client (Add, Replace, Delete, AddReplaces): 0, 0, 1, 0; changes from 
server (Add, Replace, Delete): 0, 0, 0

Yes, I'm sure the contacts on the pc and in turba are de same.
- can you sync changes? Yes

I'm testing with:

PC-1 with ligthning + funambol and user with (add, modify, deleted) privileges
PC -2: The same configuration, but with another user with the same privileges

ACTIONS:
PC 1: Add 3 contacts & sync
SERVER OK: +3
PC 2: Sync ok: +3
PC 2: Deleted 3 & sync
SERVER: Not OK: -1
PC 2: Modify 1 contact & sync
SERVER: Ok:

Did you actually read the log? Are the contacts still there?
If yes, are you sure that the contacts on the device and in Turba are 
the same, i.e. can you sync changes?

Action: I've deleted 3 contacts in thunderbird & sync with funambol

I get it in horde: 1 deleted and 2 errors

Attach: horde.log