Hangs on Mac Puntuado con 1 de 5 estrellas

I've used Xmarks for ages but have had to disable it because my Mac hangs every time now and it's def. xmarks. I've gone thru all my add ons and even after installing 4.2.3(latest version) it still happens. Please fix this xmarks as it's extremely frustrating

Esta valoración es de una versión anterior del complemento (4.2.1.1-signed).