smb_maperr32: no direct map for 32 bit server error (0xc0000225)

Every now and then this gets logged on this MacOS 10.6.4 installation:

 kernel[0]: smb_maperr32: no direct map for 32 bit server error (0xc0000225)
Now, the messages stems from smb_maperr32() in smb_subr.c, but it's still unclear to me why this is logged.

The last part of the message seems to be the errornumber, here's how often each error got logged:
      32 (0xc0000185)
      45 (0xc00000c9)
    3181 (0xc0000225)
According to ntstatus.h, this deciphers to:
  (0xc0000185) - STATUS_IO_DEVICE_ERROR
  (0xc00000c9) - STATUS_NETWORK_NAME_DELETED
  (0xc0000225) - STATUS_NOT_FOUND
The server side is some samba-3.2.5 and when the clients logs the message, no error gets logged on the server. Also, I have no problem accessing the shares, it's all working perfectly, I'm just wondering about the error message...