What are you giving your email at forums for? Are you crazy? Or maybe it's not your email?

Anyway, the speeds depend on the number of hosts you are dlding from: the more the better.
Also, it depends on what kind of connection the hosts have and how busy they are at the moment you click the dld. Give it a little time to connect properly to more hosts, thus increasing dld speed.
Finally, it depends on how many active dlds are up: if you have too many dlds that are currently dlding, then the overall speed will be lower because you connect to less hosts for each dld.

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iMac G4 OSX 10.3.9
RAM 256MB
LW 4.10.5 Basic
ADSL anything from 3 to 8Mbps/around 1024kbps

"Raise your can of Beer on high
And seal your fate forever
Our best years have passed us by
The Golden Age Of Leather"
-Blue Öyster Cult-