[Xy-pic] broken diagrams produced by dvipdfmx

[Slomo]

I got a broken diagram in the pdf document compiled
by latex and dvipdfmx.

Here is a short sample (from the example 5-3-4 of LaTeX Graphics Companion):

-----------
\documentclass{article}
\usepacakge[all]{xy}
\begin{document}
\begin{xy}
  0*+[o][F]{DL};<2cm,1cm>*+[F]{UR} **@{.}
  ?<*@{<<} ?(0.5)*!/_3mm/{\Omega} ?>>>*@{>}
 \end{xy}
\end{document}
-----------

Any other complie method produces perfect pdf document:

 1. pdflatex
 2. latex -> dvips -> ps2pdf
 3. latex -> dvipdf
 4. latex -> dvipdfm

Anybody has a hint for the solution of this problem?

Many thanks,
Honza.
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