problem of amaya

hello.
i use amaya 1.2a version.
but it has many problem.
i describe some of them.
one is that accessing speed for internet is very slow.
and one is that it do not support frame.
and one is that its color is very strange,
i tried to change color, but did not work properly. 
why?
i want that developer of amaya repair these problems.
as the last, i like amaya since it is first mathml
browser.