Hi,
with FileZilla or FTPRush is the samething..
I think here the issue is the Permission and Owner problems. In root session, I can't delete an folder that I created with my account TEST.
But, in root session, if I begin upload a file and stop and abort the transfer... with filezilla the column Owner/Group is indiacate root/root... If I try to resume the transfer that work!
with the TEST account, I try the samething.. and Owner/Group is test 10