Could you tell us what software you're trying to download and what couputer are you using.
You can also try some generic troubleshooting steps:
What an idiotic topic! Four different posters, with four differnet problems, but none would provide any information!
To lavadahana: see "Why can't I install Flash Player on my Tablet?"
To the rest: start a new topic in the appropriate forum, and provide all relevant information. This topic is now closed.