I decided to wipe Windows 7 and made a full installation.
Everything works great but for a Encore N300 wireless usb dongle that I use on my desktop. Ubuntu seems to recognize it and I can browse the available networks, but I can connect to any of them. I was told that I should download its drivers, and so I did it, but I don't know how to install them.
Please, I'd like to know if my connectivity problem is really a driver issue or some other thing.