well believe it or not. just did a fresh install with d 7-12 [released on 2012 feb. 01]
first of all - i am strugling with t he htaccess for months not. with the orignial htaccess i have no luck at all. With that - all i get is the following
Internal Server Error
The server encountered an internal error or misconfiguration and was unable to complete your request.
Please contact the server administrator, webmaster@boysday.org and inform them of the time the error occurred, and anything you might have done that may have caused the error.
More information about this error may be available in the server error log.
okay - for several months i do the following; i exchange the htaccess-file with the following one:
that is overworked by my serveradmin http://pastebin.de/22149
See this links and make up your mind - about this courious error.
Well but with this alone i get a blank site
Next-step: trying out a settings-file - that is derived from a drupal commons 6.x24 - [very very curiouls and strange - i know - but what should i do] When i upload a settings-file that is derived from the default.settings.php then i alos get a blank page If i upload a settings file (/that i have taken from the drupal commons 6x-24 - which is obviousliy blank (not filled in with something) then i get the following