I recently compared Windows Vista internal Webdav client (mini-redirector) to WebDrive, because Vista seemed to be very slow.
I found that Windows Vista uses only 1 HTTP connection and needs 9 requests on average to upload one file, while WebDrive uses 2 HTTP connections for uploading by default (can be configured to use more), and needs only 3 requests per file. Result is that copying 50 MB folder with about 60 files to webdav server averages at about 50kb/sec with Vista and 400-700 kb/sec with WebDrive.
Are there any settings to tune Windows Vista mini-redirector client to use less requests (i.e. avoid putting empty file first, avoid locking) or to use more upload connections?