[cups.general] printer is idle....but NT_STATUS_ACCESS_DENIED

[Infinito]

Hi,
I've got a printer connected to a windows xp machine that is used by a 
linux machine through samba. The printer is working, and in the error 
logs I don't have any sacring message, but if I do a lpstat -p I get:

printer sts22 is idle.  enabled since Jan 01 00:00
         Unable to connect to SAMBA host, will retry in 60 
seconds...ERROR:  Connection failed with error NT_STATUS_ACCESS_DENIED

Why is this message being shown?
Any idea?

Thanks,
Luca