My google page-rank is back today. Some days ago I moved that blog to the new domain. I've placed a .htaccess redirect Rewrite Rule
^(.*)$ http://alexander.holbreich.org/$1 [R=301,L]
to the old domain to preserve some humble SEO result of this page. But for some weeks new Blog had no page-rank. Now he is here and the effect of Permanent redirect on google is proved!