I have a Mac or Linux computer - is there special software available?

How do I cancel my account?

How do I set up my newsreader?

I forgot or lost my username or password.

How can I update my payment information?

What is the "Extra Boost Account"?

I have trouble paying with PayPal - what can I do about it?

How can I switch between flatrate and high speed download?

What is the "Free Download Mode"?

Why do I get very inconsistent download speeds?