cyclic folders with web WebDav on Apache 2.2.4

Server Apache 2.2.4 on Win XP

When I use a WebDav folder it works generally fine (I can write, edit,
delete files). I use Windows Explorer as client. However, I always see
the folder itself in the folder. Example:

http://server:80/upload/ is my DAV Direcory

The directory for this path shows upload (which is not there) and any
other file. When I click on upload I get into upload/upload and so
forth. I always see the directory upload again.
All other opertions work "normal".

Any idea?
Thanks
Horst

<Directory "C:/Apache2.2/htdocs/upload">
Dav On
Order Allow,Deny
Allow from all
AuthType Basic
# AuthType Digest
AuthName DAV-upload
# You can use the htdigest program to create the password
database:
# htdigest -c "C:/Apache2.2/user.passwd" DAV-upload admin
AuthUserFile "C:/Apache2.2/conf/passwords"
Require valid-user

# Allow universal read-access, but writes are restricted
# to the admin user.
# <LimitExcept GET OPTIONS>
# # require user sq
# require valid-user
# </LimitExcept>
</Directory>

------
webdav HW cyclic