problem with samba authentication

[Micha Feigin <michf@post.tau.ac.il>]

I am trying to mount a share from my window computer on my linux
box. This mount worked before but now I seem to have problems with the
authentication.

Trying the user with no password give me the following error:

> mount -t smbfs -o 'username=<user>,password=' //meravi/shared /mnt/mnt_pnt/
Anonymous login successful
27193: tree connect failed: ERRDOS - ERRnoaccess (Access denied.)
SMB connection failed

Trying login in with a password gives the following error:

> mount -t smbfs -o 'username=<user>,password=<pass>' //meravi/shared /mnt/mnt_pnt/
27388: session setup failed: ERRDOS - ERRnoaccess (Access denied.)
SMB connection failed

Any ideas on how to solve this, find more information or debug the
problem?