Mail Quit because of Growl

After an update to Safari 4 I encountered this problem. It was, eventually, an easy fix. Detailed by the growl developers - but when it first occurred quite frustrating!

It's something to do with the rendering of the preview in the GrowlMail window and it using Safari 4 html engine?

The Fix...basically changes the preview options of GrowlMail

http://www.safari4beta.com/2009/02/safari-4-beta-and-growl-mail.html

and

http://www.macfixit.com/article.php?story=20090227003450677

In Terminal:

defaults write com.apple.mail GMSummaryMode -int 2