svs57, Its ok, look on 8xx.com, i fixed it.
I have edited (85 line i think, don't remember exactly) /usr/share/themes/ThinkLinux/matchbox/theme.xml to fix the length of applets area. The additional arrow appears, but from the other side of the screen. You can't see it because of left applets go out from the screen. In my case all works fine now.
Additional info (in Russian) is here:
http://n8xx.com/post44529.html#p44529