vsFTPd - Wired upload error

Hello there!

I'm using EHCP latest version and all is running and working, only vsFTPd is problem as I never see before.

I can create directory, remove and rename, cannot overwrite upload then I must remove file so I can upload again but fail two times after successfully itself and also it takes long time to upload small files.

I have tryed to change permission and ownership and it does not solve problem. Anyone know what is error?