??? N900 versus N800 ??? STILL GOT LOTSA FLAWS ??? WSOD Screen Error ???

Any1 know how to fix WSOD (white lines on black screen defect due memory corrupt)?

I used to connect my iMac to N800, was never anything. Until recently I installed SyncTunes on my Mac OS X Tiger to sync iTunes to N800, instead my N800 got into such troubles!!!
SyncTunes accessed my both SD cards in N800. But the song title in Japanese, Korean, Thai and Chinese are in a "mess" cant be read!
How to solve such problem? Installing Fonts? iKeyboard?

Any better syncing software other than SyncTunes.
Nokia MultiMedia Transfer couldnot work for N800, only Symbian platform?

Many thanks for help! GBU any1 !