cannot write on webdav mounted share

On Mountain Lion I cannot use the webdav mounted share like a read/write disk. If I copy a file into it I get the error -36 while if I edit and save a file the editor give me the file not found error. And finally on renaming files I got the -43 error.

The webdav server is not on my administration but on network and should be a linux server. The same shares on the same server was working ok on OSX 10.7 (Lion) .

The logs say:

Aug 2 17:57:17 MacBook-Pro-di-MMMMM.local login[3024]: USER_PROCESS: 3024 ttys000

Aug 2 17:59:47 MacBook-Pro-di-MMMMM.local webdavfs_agent[2957]: (theResponsePropertyRef != ((void*)0)) failed; going to GetResponseHeader; file: /SourceCache/webdavfs_executables/webdavfs-334.1/mount.tproj/webdav_network.c; line: 2321

Aug 2 17:59:47 MacBook-Pro-di-MMMMM.local webdavfs_agent[2957]: unexpected statusCode 500

Aug 2 18:00:03 --- last message repeated 2 times ---

Aug 2 18:00:03 MacBook-Pro-di-MMMMM.local LKDCHelper[3035]: Starting (uid=501)

Aug 2 18:03:09 MacBook-Pro-di-MMMMM.local webdavfs_agent[2957]: (theResponsePropertyRef != ((void*)0)) failed; going to GetResponseHeader; file: /SourceCache/webdavfs_executables/webdavfs-334.1/mount.tproj/webdav_network.c; line: 2321

Aug 2 18:03:10 MacBook-Pro-di-MMMMM.local mds[49]: (Error) LSOF: File '/Volumes/MyService.webdav.ovh.net' (fd=9) left open on device 788529156

Thanks for the answers.