Version 0.65 of the pgf package (dev-tex/pgf) is out and available at https://sourceforge.net/projects/latex-beamer/ - thanks for updating. Reproducible: Always Steps to Reproduce:
I wasn't aware of this bug (sorry) but added 0.65 to CVS several days ago. Thanks for the bug report.
Thanks. In fact I installed version 0.65 myself the same day I opened this bug. At least three of our lecturers used it (via latex-beamer) since then without problem. So we would call it stable (x86).