Ok, so this is another gui app, but I simply had to post this one. Tucan is cross format application that automates the download process for sites such as rapidshare and megaupload. simply copy and paste your links into the software and tucan will test the links and then proceed to download them all. fire it off and forget about it! and bgest of all, it works on free accounts!
I couldn’t find this app on my build in repositories, so i downloaded it from here:
Just download the .deb and double click to install (also available for windows)