(Edited by Martin Dougiamas to fix bug number - original submission Friday, 21 September 2007, 02:38 PM)
For those that have the "scales too slow on 1.8" issue: I attached a patch for 1.8 series in MDL-1883. It's pretty much the same what Petr did for 1.9. I'll check it in 1.8 stable, if there are no objections, and I get around to test it a bit on a large site next week...