I have checked the ftp configuration of your vps and made some changes in the configuration file where ever necessary. If the system is more loaded than the value set for
MaxLoad then it will not allow to upload/download, this may result in ftp crash. I have also increased the values of
MaxIdleTime and
MaxClientsPerIP.
These tweaks should help in improving the ftp performance on your VPS. I would request to send an email at
vps@eukhost.com if the problem still persists.