“Another change that might affect some plugins is that in WordPress 2.5, the Activation hooks for plugins are run in non-global scope within a function (they used to be run in the global scope). This means that if your plugin has an activation hook, and the function it calls relies on global variables that are defined within your plugin file, you may find that they are not working properly. All you need to do is, at the global scope level in your plugin, add a “global” declaration for those variables, and you should be OK.”

I have added in file search-bot-tracking.php a string

global $wpdb, $sbtracking_table, $sbtracking_db_version, $sbtracking_plugin_file;

and after that activation working OK

http://bloke.org/php/crawl-rate-tracker-and-wordpress-25-manual-fix/

I have made a new blog in WP 2.5 so it never had any other version (no upgrade issue).

My stats did not show anything so I was worried already why the Google bot did not visit. Later on I realized I was already indexed.

The worst part is that obviously, the error only occurs if the google bot shows up. So this basically is reverse cloacking. You give normal visitors your page and you present the google bot with some error.

I deactivated the plugin and hope that Googlebot will visit me quickly.

I will keep track of this post to see if the problem will be fixed in the future.

I’m not seeing anything visibly wrong with my stats or blog, Patrick just so you know.

Patrick, If you cannot work it out then feel free to drop me an email and I can do some testing on a site where you do spot the problem. I would need access to cPanel so I can take a quick peek at the database and some of the code though, so it might not be possible for me to help unless it can be replicated on to one of my domains or if someone trusts me enough to hand over their details