Safari 5 font and Flash 10.1 problems
Flash objects loading appear to cause rendering issues in Safari.
Instance 1: The "What's New" tab in Yahoo Mail appears for a fraction of a second and then goes to blank as soon as the Flash-based chat module starts to load. The tab then remains blank.
Instance 2: When Flash ads appear on a page, sans serif text is jagged.
See screenshots.
1. http://www.joelwnelson.com/files/instance1.png
2. http://www.joelwnelson.com/files/instance2.png
Troubleshooting steps I've taken (none of which have helped):
Reapplying 10.6.4 Combo Update
Reapplying Safari 5 update
Uninstalling (using the Adobe uninstaller) and reinstalling Flash Player 10.1
Repairing Permissions
Removing all plugins from the Internet Plugins folders and reinstalling
Firefox and Camino do not have this problem; Safari 4 did not either.
2.8GHz MacBook Pro / Aluminum Mac Mini / iPhone 3GS, Mac OS X (10.6.4)