I had a problem with the same game. I scratched the third disc and I got to a point where the cutscene just wouldn't load. My weekend was ruined but after cleaning it about 20 times it finally ran. From what I can remember from the last time I played, it was a fun game.
i feel that its not worth both your effort and time to play and rush thru this wonderful masterpiece in one shot, well unless you're attempting some No-Save challenge or something. being all tired out and bashing through this game like that wouldn't do justice to the developers and yourself. its like eating a burger... swallowing it whole, you'll get yourself choked, and you wouldn't be able to taste it well.
anyways, final fantasy IX is like the greatest game ever, at least for me and a couple of fans. (:
IX actually has the most well-rounded world and story of that entire series, so to charge through it like that does you no good.
No sympathy/dinner for you.
How about playing through VII over the course of a month or so, getting nearly 100% done, and having the file become "corrupted" for NO REASON other than because I was using a now worthless third-party memory card.
A good lesson in always buying first-party accessories.