I've just installed the latest version of PW on debian 8 with apache2. The install went flawless; no errors. After the install completed I tried to access /processwire/ and failed with a 404 error. The home page of the site displays, but all links fail with 404 errors.
Research suggests to edit .htaccess to make sure RewriteBase poinst to [path]/processwire/. I did that, but access to /processwire/ is still failing. I've also tried to enable AllowOverride All in the apache2 configuration file, but to no avail.