SMALL TRANSLATION AHEAD. SPOILERS. DON'T READ IF YOU WANT TO WAIT FOR INANE. YOU'VE BEEN WARNED - IF THE CAPS AIN'T ENOUGH, I DON'T KNOW WHAT IS.
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Whoa, great chapter!!
But hopefully the last flach-back chapter for a while....

Ok guys, what I understood with my poor japanese:

The three guys outside the Uchiha house were searching for Itachi 'cause he didn't attend to an Anbu meeting they had held the night before. They were demanding Itachi to be more respectful and so on....
Besides that, there was another person missing that night - another Uchiha named "Shirui" or something like that.
Now, I'm NOT sure about this, but they are either saying that this Shirui person either committed suicide or are accusing Itachi or killing him.
However, this Shirui guy left a note that they, as Anbu, are completely sure it's true and not forged or anything. The note says:

"At this rate, there is no future for the Uchiha. Besides that, I...
This "way" that's been chosen, I'm no longer unable to follow it."

Anyway, Itachi apologizes for missing the meeting, but then he says something I can't remember, and the other three Uchiha get their Sharingan out, and Itachi goes freak on their asses, saying something like "The clan, the clan... there are more important things...", when his father arrives, the conversation goes a little like this....

Father: "You've been weird lately, Itachi."

Itachi: "There's nothing strange with me. I'm just trying to see how far my limits go... that's all."

F: "Then, why didn't you come last night?"

I: ".... for the sake of getting somewhere higher."

F: "What are you talking about....?"

And Itachi stabs the Uchiha sign!! I'm pretty sure this happens like three days or so before the massacre...
Bleh, Itachi goes on insulting the Uchiha clan and so forth, Chibi-Sasuke is scared ("I've never.... I've never seen this side of my brother before..."), the other Uchiha challenge Itachi saying something like "Well, what are you gonna do??", and Chibi-Sasuke stops everything by yelling "Brother, stop!!", which prompts Itachi to bow down and assure his elders that he didn't kill Shirui, and ask for forgivenes... which his father quickly gives him.
Then he looks at Chibi-Sasuke with very scary eyes.

And that's all for the week!! Now I hope that's all the flashback for the month, damnit!