From the blog post:
>How the hell can a program at this level of maturity have such a massive problem...
Because it's a dev build! Do people really need to be reminded of that! Dev builds are for developers!
So what if the FF dev build is more stable? Both sites explicitly say they are unstable and for testing only. To have a problem and blame the dev build is insane. Any "self-respecting geek" should know that.