Well I just grabbed the Update Manager Plugin, Version 1.8 and uploaded it to plugins directory and activated it.

Unfortunately, like some others, I am getting the following error:

Fatal error: Call to undefined function: fetch_url() in /home/mrg9504/public_html/wp-content/plugins/update-manager.php on line 191

I hope this problem can be resolved, because it should make it much easier to make sure everything’s up to date.