I press "Upgrade automatically", it continues to the next page, but the only thing printed is "Downloading update from http://wordpress.org/wordpress-2.8.6.zip.". The usual lines of data with info about the upgrade doesn't show up. When I search for the downloaded file I find it in /wp-content/wordpress-2.8.6.zip but the filesize being 0.
Tried chmod 777 on wp-content but no luck.
No files in wp-content/upgrade/.