A REAL download manage (Score 2, Interesting)

I think Firefox should have a REAL download manager, one where you can pause the download, DISCONNECT from the internet, RECONNECT at a later time, and resume the download. As it is right now, you cannot do this! Yes you can pause the download, but if you disconnect then reconnect, when you tell it to resume, the download dies and you have to start all over again. Firefox should have this functionality built-in without the need for an extension, for us who are forced to use dialup.