How do I restrict number of downloads at a single time in the download window? I want to restrict the number of downloads at a time. Other downloads should be in a queue. For example, if I restrict as 5 downloads are available at a time, the 6th download should be in a queue and should start any one of the download is completed. And the next download should resume ... and so on. So at any point of time only 5 (or it should be specified) downloads should be possible. Is there any settings can be done in FireFox for this? Please help.