Some of our users would like to use Filr WebDAV instead of Novell Client. But we found WebDAV to be extremly slow...

Filr 1.2 HP4, 2 Filr, 2 Index, 1 MySQL, 1 NFS, 1 Apache Reverse Proxy

I tried this with Windows 7 and Linux Dolphin as WebDAV Client. The most obvious symptom is: When I open a folder with NetStorage WebDAV, the content is shown instantly, with Filr it takes about 3 seconds. Every click to a folder takes a few seconds. If I download a folder with small files, every single file takes these few seconds. For example, 700kB, 47 files: NetStorage 9 seconds, Filr about 3 minutes.

Any ideas what might be wrong?