download the pagman.zip included here and unzip and run pagman.xul you will see little pac-like ghosts moving around a grid. The ones that move slowly redraw ok. The ones that move fast leave artifacts behind them.

pagman xul animation demo.

Even worse.. on mac trunk I dont even see the ghosts moving unless I hit the stop button repeatedly.... this is bad..

rjesup - I dont know if any of the DHTML work you've been doing has had any effect on XUL animation, but could you please take a look at this as well?

sending to waterson to fwd to right owner.

This looks like the reflow-starving-paint chestnut. If you hack pagman.xul so that the setInterval is ~1000ms instead of 1ms, the Inky, Blinky, and friends start to show up again.

is there/could there be a way to have a settimeout or setInterval that is "as soon as possible" like a special const or something so you could do: setInterval(time.asap,foo); Meaning... I'd like to find some way of knowing from the machine how fast can I display elements without this dropoff happening. perhaps like setInterval(-1,foo) or something.