I/O = input/output

As far as why you're receiving these errors... you'll probably have to go to BitDefender's site for specific answers about how their app works. Sorry. :(

I agree. Your cookies are expiring or being deleted. I haven't been logged out of Linux.com for a week.

FUN with The GIMP! :)

*click for bigger pic

OK, system beep is part of your hardware on your mobo. It has nothing to do with your audio in your operating system. It looks to me like you have NO audio whatsoever in your operating system right now.

From the command line as root:

# alsaconf

Follow the steps, reboot. Let me know if you have sound.

I've never seen anything like that here on the forums, Arben. Can you post a screenshot?

Gnome is lighter and simpler to use than KDE. However, if you like customizing your desktop, then you'll probably prefer KDE.