Photoshop Elements 3 looks pretty good, but Adobe recommends for the best user experience to run the app as an administrative user. For various reasons [robg adds: see today's Opener malware writeup...], I can't and won't do that.
Here's how I got Photoshop Elements 3 to run as a non-admin user. This assumes your short user name is me, and your admin user's short user name is admin_user. Open Terminal, and type the following (don't enter the $; that's the prompt character):
$ su admin_user Password: Enter your admin_user password $ sudo chown -R me.me /Applications/Adobe Photoshop Elements 3 Password: Enter your admin_user password $ sudo chown -R me.me /Library/Application Support/Adobe/PhotoshopElementsHelp $ exitPS Elements 3 will now run quite normally as a non-admin user...
Mac OS X Hints
http://hints.macworld.com/article.php?story=20041029173051401