x11: slow drawing after set xtics font

[Petr M. <mi...@ph...>]

Gnuplot x11 drawings in Octave 3.2 appear displayed much slower than it is 
usual. This slow-down can be reproduced in gnuplot by e.g.:


set terminal x11 close
test

set terminal x11 close
set title "Hello world" font "*,12" # no effect to speed
set xtics font "*,12"	# makes slow drawing

plot sin(x)/x


This slow-down is caused by
	set xtics font "*,12" 
while the font specification in "set title" does not slow gnuplot down.

Note that using "set terminal wxt" does change its speed after the font 
command.

What can be the reason? Could the speed be improved?
The delay of replotting is rather boring when working with Octave on a 
laptop running on battery :-(

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PM