[GNUTLS Error]Wine problem or not

Hi,

When i launch application which needs to connect to internet, i have this error message in the console.

Code:
GNUTLS ERROR: Decryption has failed.



I launch the app with winedebug=+secur32 and in the log, i find these lines :

Code:
0054:trace:secur32:schan_gnutls_log <2> ASSERT: gnutls_cipher.c:580
0054:trace:secur32:schan_gnutls_log <2> ASSERT: gnutls_record.c:1002
GNUTLS ERROR: Decryption has failed.
0054:err:secur32:schan_DecryptMessage Returning -2146893052



My question is :
It is a problem with wine or with my distribution ?
Winbind is installed too.

Thanks,
Max