Greek does not display correctly in iTunes
I have many songs in iTunes that have Greek titles and artists that do not seem to display well. The same goes to Address Book and iCal. The letters are correct ones, but it is very untidy and hard to read - some letters are italicized and each letter is very wide (like Japanese characters). This is a problem considering that I use Japanese, English, and Greek with equal frequency, although I would prefer to have my menu in Japanese in case my family needs to use the computer. For some reason, my iPod's language is Japanese as well, but the Greek there displays perfectly (in Helvetica font).
When I set the primary language to English in System Preferences, the Greek displays beautifully (again, in Helvetica). I therefore suspect that this incorrect rendering is due to the default Greek font (or its lack thereof) when the OS is set to Japanese.
Does anybody know any solutions for this issue by any chance? Thank you very much in advance