Firefox4 lags on Firefox download-count page?

Firefox4 download-count page

Update 29 March: Looks like Firefox corrected the page, the animations are normal/smooth now.

To my surprise, only Firefox4 lags on the Firefox4 download-count page. Both IE9 and Chrome10/11/12 render the download dots animation smoothly.

This is not a good demo page, Firefox team should do something about it. At least optimize the site so that Firefox4 can display the page smoothly.

When IE9 shows its demo pages - Santa' s Workshop, and Pirates Love Daisies, the team make sure that IE9 renders the page smoothest, using IE9's strength - Hardware Acceleration.

When Chrome demo its pages - HTML5rocks and 20 Things I learnt about Browsers and The Web, the team make sure that there are no flaws when users browse the page via Chrome.

On another node, saw a lot of bad comments (compatibility) on the new Firefox mobile as well.

Maybe its time for Firefox team to QC before launching their products. :)