A solution for a not working Safari 3.1 after upgrade

Here is a solution for a non working Safari 3.1 after upgrade.
My Safari was bouncing once on the dashboard, and then it doesn't work anymore.
How I solved the problem:

1. Go Home (User name) / Library / Preferences
2. Find the file "com.apple.safari.plist"
3. Move it to the desktop
4. Log out / log in again
5. Open Safari and problem solved!
6. Erase the old "com.apple.safari.plist" from the desktop (Safari creates a new one).

Hope this helps.
Regards