User-Agent: Mozilla/5.0 (Windows; U; Windows NT 5.1; en-US; rv:1.9.1.2) Gecko/20090729 Firefox/3.5.2 Build Identifier: Mozilla/5.0 (Windows; U; Windows NT 5.1; en-US; rv:1.9.1.2) Gecko/20090729 Firefox/3.5.2 Since v3.5 now support CSS3 support of border-radius property. It does not work for fieldsets however the -moz-border-radius property works. eg. <fieldset style="border-radius: 5px;"></fieldset> does not round corners <fieldset style="-moz-border-radius: 5px;"></fieldset> does work. Reproducible: Always Steps to Reproduce: 1. <fieldset style="border-radius: 5px;"></fieldset> Actual Results: not rounded Expected Results: rounded

If you add a border to the fieldset then the border radius is used so it's similar to bug 456178.

Drat sorry, scratch that about adding a border. I tested the testcase in one profile but then tested adding a border in another profile which has userchrome set to add moz-border-radius to fieldset to make it look more native on XP.

> Since v3.5 now support CSS3 support of border-radius property. That's not the case. We support -moz-border-radius, but not "border-radius" yet. Which is exactly what you're seeing.