I updated this morning to 1.9 version. After that, there has not been any visit recorded. I have checked the datadase, and no record have been added to piwik_log_visit table since then,
I do the tracking for Joomla and Wordpress by using plugins, and html sites by adding code, and all of them fail.
I have discovered my error. I was revising all logs, from apache, from plesk (the manager of my server), and so on, and no reference to piwik. I also enabled piwik debug, and no output in any place. Al last, I looked at the tracking using firebug, and the track was empty. But I realized that the request was sent always to http://piwik.myserver.com and piwik was installed at https://piwik.myserver.com
I modified the plugin to force the connection to https piwik server and… Voila! It worked.
When I connect to piwik, I always connect to https server. But I have piwik files in both places, http and https. It seems I installed Piwik in both places, httpdocs and httpsdocs. But it has been working until today.
So, is ir correct to have all the piwik files in http and https? Should I delete the http files? Or should I update the files I have in the http site?
Thank you, Matt, for your firebug suggestion. It has been the key to discover the error.
https://stat.first-world.info/ doesn’t have a valid ssl certificate. Its either a self signed one or not working one. That way tracking won’t work for ssl pages.