OK, after a complet download from the official torrent ... no crash of this version 0.9.3 on my WinXP SP3 + all KBs updates.
Strange that it have been located on the blockchain files  

So, the answer is : when bitcoin core crash without warning ... re-download the whole blockchain folder.  

ps : i don't  have changed anything in this computer ... and it's run only for network stuff (no private use).