The fix eliminates nearly all issues and make it very good to play on the PC, as long as you have a gamepad.It includes things like playing the game on your native monitor resolution, ability to customize your controls, crash fixes, actually functional Alt+Tab, and some other minor issues.
It is currently in version 1.0 (final?) and can be downloaded at http://blog.metaclassofnil.com/?tag=dsfix
I disagree with those that say Dark Souls is ‘the BEST GAME EVER MADE’ or ‘IS THE HARDEST GAME EVER MADE’. From observation of the game and the people that play it, it appears that Dark Souls is ‘refreshing’ because content is tethered to one’s gaming skill. If you don’t have the skill or patience to do an encounter, the content is blocked off. This is how video games used to be.
It is also why Dark Souls gets so much respect. People don’t respect games because they do not act like games. They act like movies or puzzle adventures. If you cannot lose, are you actually playing a game?
Gamers want to buy games, not interactive toys.