Why enter password so often?

[Lou_Reed]

After we have logged in as linaro at the beginning of a session why is it necessary
to re-enter our password once the again when running certain programs and why do we need to enter
ctrl-alt-F2 when we want to run other programs?

In my experience with Centos/Redhat you enter a password as a super user only to verify
that you are about to make a change in the Linux OS. But it seems that you do not have to do that here.

As I said in the paragraph above the only time is to run certain Parallella/epiphany programs.

As help appreciated.

Thanks in advance.

Respectfully,


Lou_Reed

[9600]