When i develop site on temp subdomain, there is not any outside link to this temporary site. I do not use google toolbar, i use google chrome and firefox (no google toolbar) for development.
Please check this on dnn6.x, i was wery cerful with this things ..
I did not in web master tools add this temp doman, or send via site settings in dnn.
2 new sites on 2 separate instalations, i have first install 06.00.02, then i upgraded to 06.01.01. then upgrade to 06.01.02
i realy care about that, before sending sitemap via webmaster tools ...
i first add realdoman.com in site settings, then delete temp.mydomain.com, then delete sitemap.xml, start realdoman.com/sitemap.aspx (new sitemap.xml is created, i check it), then restart dnn application, and then i send realdomain.com/sitemap.asxp from webmaster tools
i don't know, is it google somehow automaticli add subdomain, when i test it from chrome.
i know that temp.mysite.com is indexed and realdomain.com are not ;-(