Thought Torrent - GMail slows down

I was surprised to see the counter on GMail's front page still there. The quota really has been increased to 2050MB, as promised. The conter made me wonder how far they were going. Infinity+1?

Well, the quota count is managed by this chunk of code:
var CP = [
[ 1112331600000, 1025 ],
[ 1112439600000, 2050 ],
[ 1113062400000, 2075 ]
];

function updateQuota() {
  if (!quota) {
    return;
  }

  var now = (new Date()).getTime();
  var i;
  for (i = 0; i < CP.length; i++) {
    if (now < CP[i][0]) {
      break;
    }
  }
if (i == 0) {
    setTimeout(updateQuota, 1000);
  } else if (i == CP.length) {
    quota.innerHTML = 'Over ' + CP[i - 1][1];
  } else {
    var ts = CP[i - 1][0];
    var bs = CP[i - 1][1];
    quota.innerHTML = format(((now-ts) / (CP[i][0]-ts) * (CP[i][1]-bs)) + bs);
    setTimeout(updateQuota, 50);
}

Cute, yes? It

1. Finds where the current time is in the list (the for loop)
2. Computes the difference in sizes (CP[i][1] - CP[i-1][1]) and time (CP[i][0] - CP[i-1][0])
3. Calculates size/time to get how much it should add to the quotea
4. Sets up a timer to call itself (to update the quota again)

Why it recalculates everything is beyond me and the for loop could be written for(i in CP) ... ahem, the point is that the counter is approaching certain values on a schedule. The times and sizes stored in CP are:

time	target size
Fri Apr 01 2005 00:00:00 GMT-0500 (EST)	1025
Sat Apr 02 2005 06:00:00 GMT-0500 (EST)	2050
Sat Apr 09 2005 12:00:00 GMT-0400 (EDT)	2075

So, althought the quota is still increasing, it's doing so much slower than yesterday (4.2% of the previous rate).