For some reasons, the core permalink structure of WordPress 2.5 has been changed just before it is being released (the problem is not there with WordPress 2.5 RC1).
If you get a 404 on WP-Email and WP-Print posts/pages, you need to get the latest development version of the respective plugins. Refer to the post above this.
I also wished I have more time to spend updating my plugins, but as my school is nearing the semester end, all my projects deadline are also coming and so are the end of semester exams. I can’t fork out any valuable time to update all my plugins for WP 2.5 and hence, 1st June 2008 should be the day I will roll out the updates to my plugins as my last paper is on 6th May 2008.
But in the mean time, I will try my best to address all issues related with my plugins and WordPress 2.5.