WordPress 2.9 Carmen just launched couple days ago.
Recent versions of WordPress feature an Automatic Upgrade option. Just click Upgrade Automatically and within a minute, it’s done.
However, this time I had an error about allowed memory size exhausted.
This error message is because WordPress exceeding itâ€™s predetermined memory limit in PHP environment.
Luckily, there is an easy solution.
WordPress sets its memory limits within the wp-settings.php file.
All has to be done is change the memory limit from 32M to 64M.
Now, upgrade WordPress to the latest version without any problem.