3.5.13-sru krusader mount manager

Hello. I use 3.5.13-sru on Archlinux (x86_64). I use krusader mostly and I prefer to mount/umount external storages with krusader (Ctrl+M combobox , under proto/address/path line ). It's ok with usb-storage with FAT. But with usb-storage with ntfs it has some troubles. I've merged rules into hal policy *.fdi to use ntfs-3g and mounting process became ok. But trying to unmount I've get error that operation is not allowed. It seems that i'ts indeed krusader's mount manager fail , because konqueror does unmount well the same mounted storage (from media:/ window). Is this distro-specific bug ? How can I fix it ?