My iTunes program has broken letters, How can I solve the problem?

I bought a new MacBook few days ago.
I set up my MacBook and then set up ipod.
On the first day, it had no problem.
But on the next day, when I launched iTunes, all the letters were not english font, but they were Hebrew and other broken fonts.
How can I solve this serious problem?

Welcome to the Apple forums, Samuel.
How can I solve this serious problem?
Very simply.
You have installed an application which has placed its own copy of the font "Lucida Grande" on the hard disk. This copy of Lucida Grande is causing a conflict with the Mac OS X version - Lucida Grande is provided and used by the Mac OS to display text in menu bars and on buttons.
Open "Font Book" and locate the entry for Lucida Grande. You will see a black dot next to the name - this indicates that the font is duplicated.
Click the triangle to show all instances of the font.
Click on "Preview" in the menu bar and choose "Show Font Info" from the drop down.
Click on one of the instances of Lucida Grande.
In the info window, look at the entry for "Location". If it does NOT say System/Library/Fonts/Lucida Grande delete it.
Do not, under any circumstances delete the font if the location shows up as:
/System/Library/Fonts/Lucida Grande This is the Mac OS X system version.
Message was edited by: Nick Holmes
Message was edited by: Nick Holmes

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