search for: unsuccesssfully

I have a samba server in linux and two samba client in windows. in window xp, I use jcifs to access the file in samba server. sometimes, a client will lock a file and the other client can't want to delete the file. but the client will delete the locked file unsuccesssfully, this is not my expectation. so i want to know, is there any configuration in smb.conf to allow clients delete a locked file. or in jcifs, can I delete a locked file by force Thanks for any reply.