Problems With Download speed

The Download speed for my SmartFtp is always limited to around 1KB/s even though we have not set any download speed limits.

Also uninstalling the software from the machine & reinstalling has all the settings remembered on it
I want to install SmartFtp Freshly with no previous configration remembered.

I tried installing Filezilla(another silmilar software) on the same machine
it works fine & give download speed upwards of 15KB/s

How do i get out of this speed limit problem???/

Go to the menu: Tools->Settings
Then go to the Queue dialog and set the KBps/Worker value to 0.