Only three downloads at thie time?
 

I'm facing the problem that I can only download three files at the time - all others will be queued. My bandwidth does allow al lot more. What ca I do?

It sounds like you set your max upload speed to 2 in your preferences. teh number of downloading and/or attempting segments you can have at one time is Upload Speed * 2. In my experience (albeit on a modem) upload speed per segment is not limited, though if all of your current segments are downloading from modem users, that isn't much of a plus.