Did you file a bug report?
I'd go to the website and it would say to use Sudo commands.
Synaptic and Adept both already trigger sudo automatically when installing.
I like browsing sites to see what is said about an application before I download/install it.
Synaptic and Adept both provide a lot of information about available packages. And you can still go browse the 'net about them if you wish.
Getting the program from an authorized repository is much safer than grabbing an exectuable from some random website and hoping it isn't a trojan.
Never had a trojan from an installed application. I only install applications I know are safe and widely used.
Sorry, but Linux is not for everyone.