The editor control needs to be initialized on the client browser. The time it takes to do this is directly proportional to the tools you use. We have a KB article about optimizing the editor load times here - http://www.telerik.com/support/kb/article/b454K-ech-b454T-tt.aspx
. This article is discussing the regular ASP.NET control, but some of it is also relevant for the MOSS edition. You can try editing the editor's tools and configuration files, located at c:\Program Files\Common Files\Microsoft Shared\web server extensions\wpresources\RadEditorSharePoint\188.8.131.52__1f131a624888eeed\RadControls\Editor\.
Here are the items from the KB article which apply to the MOSS editor:
- [most improvement] Remove all modules from the ToolsFile.xml file (the <modules> section).
- [most improvement] Antivirus tools can significantly impact page load time and thus slow down the editor. For example, McAfee Enterprise 8.0 has a feature called 'ScriptScan' that scans the JS on each page. This is leading to 2x to 4x slower page loads.
- Modify ToolsFile.xml with less tools for the toolbar (i.e. remove the tools you will not need).
- Make sure that the client's browser cache is enabled (this is the default option for IE) from Tools - Internet Options - General - Settings - Reload page: Automatically.
the Telerik team