Make sure you update your Growl GrowlMail now working for leopard! I never got growlmail to work, but now 1.1.3 can from macupdate: DESCRIPTION Growl is a notification system that allows any application to send it a notification, and then it displays it. You can (for example) be notified that you have new email, or that a download completed, etc. Support for Applescript, Perl, Python, TCL, Cocoa, Carbon, Ruby and more being added. Download Now WHAT'S NEW Version 1.1.3: Growl core improvements Worked around conflict with Logitech Control Center 2.4, and implemented countermeasures in case another input-manager hack in the future has the same bug Show notifications on every Space (Leopard) Fixed bug that caused Growl to silently not show notifications if you deleted your default display Fixed bug where Growl would fail to clean up .growlRegDict files in the Temporary Items folder, instead leaving them to appear in the Trash when you next logged in Use the alert-sound device, rather than the default sound device, to play sounds Don't spam the Console log when a forwarding attempt fails Extras improvements Rewrote GrowlMail to fix conflict between it and Leopard, and make it much more robust for the future GrowlMail installer package now allows installing to other startup volumes without restarting Updated GrowlSafari to work with Safari 3.0 and later (thanks to Ben Willmore) Fixed growlnotify to actually send the notification on Leopard GrowlTunes no longer shows the rating if it's 0, since you probably just haven't rated it Fixed German localization of GrowlTunes Preference pane improvements Moved the version number outside of the Credits file, so we don't need to update that file every version Fixed a hang on changing the default display Updated the Brazilian Portuguese localization Display improvements Fixed displaying a close widget on mouse-over Fixed humongous memory leaks in WebKit display Made obtaining image data in WebKit display more efficient Fixed displays to register a click on mouse-up, not mouse-down Updated French and Dutch localizations of displays' preferences download/update away http://growl.info/