samba - Nov 2004 - strange behaviour of Windows Clients regarding HTTP/PDC

Hi,

I am using samba 3.0.9 as a PDC with some W2K and XP clients.
Some of the XP machines have got SP2 some weeks ago.
(They are all private, so some users did it, others did not)

On my PDC there also runs an apache, now I read in my error_log:

[Mon Nov 22 14:40:54 2004] [error] [client 172.16.3.100] File does not 
exist: /var/www.public/tmp
[Mon Nov 22 20:03:49 2004] [error] [client 172.16.2.3] File does not 
exist: /var/www.public/standard
[Mon Nov 29 14:06:17 2004] [error] [client 172.16.3.100] File does not 
exist: /var/www.public/saal
[Wed Nov 24 13:55:08 2004] [error] [client 172.16.3.100] File does not 
exist: /var/www.public/home

where standard is the name of one of my printers and the others are 
names of shares on the pdc !

and in access_log there are things like

172.16.3.100 - - [29/Nov/2004:14:06:17 +0100] "PROPFIND /saal
HTTP/1.1"
302 317 "-" "Microsoft-WebDAV-MiniRedir/5.1.2600"
172.16.3.100 - - [29/Nov/2004:14:06:18 +0100] "PROPFIND /saal
HTTP/1.1"
302 317 "-" "Microsoft-WebDAV-MiniRedir/5.1.2600"
172.16.3.100 - - [29/Nov/2004:15:15:18 +0100] "OPTIONS / HTTP/1.1" 200
-
"-" "Microsoft-WebDAV-MiniRedir/5.1.2600"
172.16.3.100 - - [29/Nov/2004:15:15:18 +0100] "PROPFIND /saaldirektorium 
HTTP/1.1" 302 317 "-"
"Microsoft-WebDAV-MiniRedir/5.1.2600"

maybe somebody can explain that to me?
Is there some option or trick in the netlogon-script so I can prevent that?


thanks!
Florian