MDBT42Q's flash has been emptied! Everything disappeared from the storage.

Ok, I'm just running this code (writing to multiple files, 100 times a second) on an MDBT42Q with firmware 2v09 and we'll see if it breaks:

function log(){"ram"
  var f = "log"+Math.floor(Math.random()*8)+".txt"­;
   if (require("Storage").read(f) == "undefined") {
    require("Storage").write(f,'1');
  }else{
    var n=parseInt(require("Storage").read(f))+1­;
    n=n.toString();
    require("Storage").write(f,n);
  }
}

require("Storage").write("A","Hello World");
setInterval(log, 10);
require("Storage").write("B","Yet another bit of data for us to store");
setInterval('print(require("Storage").ge­tFree(), require("Storage").list())', 2000);

However it did get me thinking - are you using a watchdog timer? While we should kick the watchdog often enough, I guess if you used a small timeout then it's possible that the device would reboot itself during the compaction phase.