'Twitter' from the account
I wanted to install the 'Twitter' application from the Mac App Store.
When I did so, the login menu popped down, and it said that I had to log into the account.
This is not my account.
I've searched my Mac using spotlight, and I do not already have the application.
So now I can't download the application.
However, it dus appear under 'Updates', and when i press [update], it asks for the password again.
I'm worried that it got on my computer via a hack of some sort?
And what could I do in order to fix this problem?
<Edited by Host>
MacBook Aluminium, Mac OS X (10.6.7)