I've just downloaded WordPress 2.3.1 (in both zip and targz versions). I've created 'http://foo.com', and 'http://foo.com/phpinfo.php' works fine ("PHP Version 5.2.17").
I unzipped (or untarred) the WordPress code, but when accessing 'http://foo.com' I get a blank page.
However, it works ok if I unzip the code under 'http://foo.com/blog' directory (same code, same permissions). I've chmoded code to 755, 777, etc. but it does not work.
Any similar experience? I've installed dozens of WordPress blogs, and this is the first time I've seen this.
Thank you very much in advance.