Broken Box blocks Flash in Sarafi, and a bit more.
Broken Box Safari Extension (0.40)
Extensions are disabled by default in Safari 5.0. You must first enable extensions in Safari then you can double-click the brokenbox.safariextz that you downloaded to install Broken Box.
The YouTube feature of this extension would not be possible without the work of Connor McKay. If you aren't bothered by Flash but want YouTube done right I recommend YouTube5.
/* Broken Box Copyright 2010 Holland Rhodes.http://gavers.com/brokenbox/
Licensed under the Apache License, Version 2.0 (the "License"); you may not use this file except in compliance with the License.
You may obtain a copy of the License at: http://www.apache.org/licenses/LICENSE-2.0.
Unless required by applicable law or agreed to in writing, software distributed under the License is distributed on an "AS IS" BASIS, WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied. See the License for the specific language governing permissions and limitations under the License. */
/* YouTube5 Copyright 2010 Connor McKay.http://www.verticalforest.com/2010/06/09/youtube5-html5-converter-for-youtube-videos/
YouTube5 is free software: you can redistribute it and/or modify it under the terms of the GNU General Public License as published by the Free Software Foundation, either version 3 of the License, or (at your option) any later version.
YouTube5 is distributed in the hope that it will be useful, but WITHOUT ANY WARRANTY; without even the implied warranty of MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the GNU General Public License for more details. */
Should you want to contact me for any reason send an email to gavers at hotmail dot com.