Why after packages update my 'startx' gives me a message: Protocol not supported by server.

[Yuri]

It keeps repeating this line in original terminal, putting line ".." in 
between. So it looks like this:
Protocol not supported by server.
..
Protocol not supported by server.
..
Protocol not supported by server.
..
<goes on like this>

Now I have to start just 'Xorg', it starts bare X. And from another 
terminal I have to start kde: "DISPLAY=localhost:0.0 
/usr/local/kde4/bin/kde"
Then it works ok.

My .xinitrc looks like this:

export LANG=en_US.UTF-8
export XMODIFIERS='@im=SCIM'
export GTK_IM_MODULE=scim
export QT_IM_MODULE=scim
export XIM=SCIM
export XIM_PROGRAM=SCIM
exec scim -d &
/usr/local/kde4/bin/startkde

Yuri