If I start to download more than one thing in a short time, usually at least 1-2 of these things can't find availabile sources...
For example, if I search a particular band and I want to start to download 5 albums, 3 albums gets a lot of sources, but the status bar of the other two remains red and aMule can't find sources... The problem is solved deleting and restarting the download, one per time... Why?