samba - Apr 2003 - huge amount of _samr_query_aliasmem errors

I get a HUGE amount of the following errors:

In /var/log/samba/log.smbd

[2003/04/28 12:11:55, 0] rpc_server/srv_samr_nt.c:_samr_query_aliasmem(2626)
  _samr_query_aliasmem: Not yet implemented.

In /var/log/syslog

Apr 28 12:25:14 iuamtg smbd[23473]: [2003/04/28 12:25:14, 0] rpc_server/srv_samr
_nt.c:_samr_query_aliasmem(2626)
Apr 28 12:25:14 iuamtg smbd[23473]:   _samr_query_aliasmem: Not yet implemented.

And when I see huge, I mean huge:

grep smbd /var/log/syslog | grep "Apr 28 11:" | wc -l
  38398

grep _samr_query_aliasmem /var/log/samba/log.smbd | grep "04/28 11" |
wc -l
  19193

Obviously this is not only rather unpleasant, but also pretty worrying... 

All these errors seem to come from one user (Windows XP)
The server is samba 2.2.8a on a debian woody box.

Maarten