Q: Which plug-ins to remove to fix Safari?

I've been having problems with Safari loading slowly and hanging. I found when I disabled plug-ins Safari seems to load faster. I'm assuming any plug-in from Apple would be safe to use. I just don't know which plug-ins I should get rid of and how to get rid of them. Could I just have too many plug-ins?

I have Safari 5.1.7 on Lion. My list of plug-ins are:

Google Earth Plug-in

The Google Earth Plugin allows you to view 3D imagery and terrain in your web browser. — from file “Google Earth Web Plug-in.plugin”.

Google Talk NPAPI Plugin

Version 1.9.2.1599 — from file “googletalkbrowserplugin.plugin”.

Google Talk Plugin Video Accelerator

Google Talk Plugin Video Accelerator version:0.1.43.4 — from file “npgtpo3dautoplugin.plugin”.

Java Applet Plug-in

Displays Java applet content, or a placeholder if Java is not installed. — from file “JavaAppletPlugin.plugin”.

Picasa

Picasa plugin. — from file “Picasa.plugin”.

QuickTime Plug-in 7.7.1

The QuickTime Plugin allows you to view a wide variety of multimedia content in web pages. For more information, visit the QuickTime Web site. — from file “QuickTime Plugin.plugin”.

SharePoint Browser Plug-in

Microsoft Office for Mac SharePoint Browser Plug-in — from file “SharePointBrowserPlugin.plugin”.

Shockwave Flash

Shockwave Flash 11.2 r202 — from file “Flash Player.plugin”.

Silverlight Plug-In

4.0.60831.0 — from file “Silverlight.plugin”.

WebKit built-in PDF

Thanks