@DvoraElisheva: You need to jailbreak it first.
@SurgE: Nope, probably won't work on a KSO, for obvious reasons.
@morrislee: No custom version tag, that's okay. And we don't touch the browser at all on a K2, so, probably unrelated.
@cleanwelllighted: Yes, you do, check the first post, or track down the message posted when .7 was released

.
@ma5yk: You might want to read the first post more carefully...

.
@kinkle: There are a few notepad-like apps out there, wrong place to ask about that

.
@mrExtreme: Make sure the fonts you're using cover the necessary unicode range for your language, that your docs are proper UTF-8 encoded mobi files, and that the Kindle isn't falling back to the CJK fonts (which might not cover your particular script).