Yesterday, I replaced Ubuntu 13.04 (before that, it was Windows 7) with Debian 7.0 Wheezy/XFCE on my Sony VAIO laptop.
The laptop is a pretty decent one, with 4GB of RAM and 2.13 GHz Intel Core i3 processor (full specs here); but Windows and Ubuntu weren't fast enough. Especially Ubuntu, which I think, is going downhill in terms of performance or snappiness, with each release.
Considering the stability and lightweight-ness of Debian and XFCE, I went ahead and set it up on my laptop. I must say, so far, I am really happy.
But as my laptop booted, I noticed a small error stating that the drivers for my graphics card were not installed, and that to fix it I need to install the 'firmware-linux-nonfree' package.
If the same happens to you, make sure "Non-DFSG-compatible Software (non-free)" and "DFSG-compatible Software with Non-Free Dependencies (contrib)" are checked under Software Sources. To do it in XFCE, you'd go to 'Applications Menu > System > Synaptic Package Manager > Settings > Repositories'.
The 'firmware-linux-nonfree' package comes from Non-DFSG-compatible Software (non-free) repositories.
Once checked, restart the PC and run the commands:
# apt-get install firmware-linux-nonfree # apt-get install flashplugin-nonfree
That's it. Maybe I am missing a few others, but so far, everything appears to be going fine.
Also read: Enable 'sudo' in Debian (like Ubuntu)