IIS FTP refusing/dropping clients

Hi,
im having some major issues with the MSFTP server

its a fresh install of Server 2003 with plesk
i can connect to the ftp server fine
its logs in etc..
but when i transfer files it screws up...
it will transfer about 1-5 files using active mode, then i received errors
like....

200 PORT command successful.
Opening data connection IP: 192.168.1.100 PORT: 3144.
STOR admin.php
150 Opening ASCII mode data connection for admin.php.
An existing connection was forcibly closed by the remote host.
426 Connection closed; transfer aborted.

It happens all the time.

if i try and use passive mode
i get errors like this.... the same situation its transfers a few files then
dies.

227 Entering Passive Mode (216,55,132,43,21,243).
Opening data connection IP: 216,55,132,43,21,243 PORT: 5619.
No connection could be made because the target machine actively refused it.

and sometimes when i connect i dont even get a directory listing.
i just get
'/'

and thats it
has anyone got any advise iv tried searching the mskb but couldnt find
anything relevant that could help me

I appreciate it.
Thanks
Rob

What's a plesk?

plesk is a hosting automation software package....

sw-soft.com

I don't use the IIS FTP service, does your software have it's own FTP server or does it use IIS's FTP server?

I don't recognize any of your messages, maybe you have some quota settings on the server or something?

www.iisfaq.com is a good IIS resource site.