There is a lot of old cruft in its web engine "gecko" (http://en.wikipedia.org/wiki/Gecko_(software) http://en.wikipedia.org/wiki/Gecko_(software) , http://en.w

There is a lot of old cruft in its web engine "gecko" (http://en.wikipedia.org/wiki/Gecko_(software) http://en.wikipedia.org/wiki/Gecko_(software) , http://en.wikipedia.org/wiki/XUL http://en.wikipedia.org/wiki/XUL , http://en.wikipedia.org/wiki/XPCOM http://en.wikipedia.org/wiki/XPCOM). Many addons are XUL based and have had problems with the multi process mode. In 1-2 years hopefully Servo is ready combined with a simple HTML based UI to do what Firefox/Firebird/Phoenix did with Mozilla Suite: http://en.wikipedia.org/wiki/History_of_Firefox#Naming http://en.wikipedia.org/wiki/History_of_Firefox#Naming