samba - Nov 2009 - call_nt_transact_ioctl(0x90060): Currently not implemented

Hi,

We have a large (8 CPUs, 32GB RAM) x86 Sun server running x8664 Debian
Lenny, with Samba 2:3.2.5-4lenny6. It's a BDC and file server. I have
noticed various entries in the log files that I'd like to understand
better.

Some machines are generating this:

[2009/11/16 15:10:49,  0] smbd/nttrans.c:call_nt_transact_ioctl(2019)
  call_nt_transact_ioctl(0x9005c): Currently not implemented.

Others are generating this:

[2009/11/17 10:42:57,  0] smbd/nttrans.c:call_nt_transact_ioctl(2019)
  call_nt_transact_ioctl(0x90060): Currently not implemented.

Machines seem to generate either, but not both errors.

Obviously I have googled and found stuff like
http://old.nabble.com/Error-message-:-call_nt_transact_ioctl(0x90060)-tc23255045.html
, but haven't found any answers to what is actually going on.

Incidentally, I noticed this when investigating complaints of slow Windows
performance, but this may or may not be related.

Very greatful for any help.

Thanks.