I recently reinstalled everything in my zaurus, i cleaned out the memory and did a fresh reinstall of everything. I bought my Z in a trip to Japan, FYI I used the original stuff i used when i bought it, I used the Backup from streamline-cpu for it to localize it, (dated sometime in 2005).
The process I did was reset the machine to factory conditions and apply the backup. (I didn't do the long deletetion and checking process, just the quick one). I don't think it could be hard drive problems as my Z gets very little use (to the point i charge the battery about 2 times per month)
i had already done the ROM update later last year, so this time i reset my Z I didn't do it (for some reason the Zaurus ROM version in the System Info shows 0.0).
But when I turn on Music Player 2.0, every now and then it makes my Z crash, and I have to open up the battery and click the reset button. The screen just freezes as it was, the music player stops playing alltogether, and the unit is completely unresponsive, no buttons work (I haven't tried any key combos if there are any)
I'm still a n00b when it comes to Zaurus and linux, so please keep the answers simple.