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Numerous (about 83) ScriptResource.axd files produced by asp.net page with AJAX

I'm rewriting a website and really making the effort to fix as many problems as possible, no matter how minor. Having recently had to use a mobile browser on a weak GPRS signal outside Ambleside (!) I'm trying to ensure my redesign keeps data transfer sizes minimal.

I've developed and initially inspected a virtually empty page using Fiddler Web Debugger, I was amazed that, as well as the page, favicon, css file and the small logo image, there were 83 Resource.axd files adding up to 480kb. I understand that these pages are required - just shocked by the quantity and size. Is this normal?

The page just has the placeholder for the Ajax Toolkit scriptmanager but no active Ajax items.

<ajaxToolkit:ToolkitScriptManager ID="AjaxScriptmanager" runat="server" EnablePartialRendering="true">

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Is this behavior normal and more importantly, can I reduce the number and size of these files down whilst still having access to the Ajax "AutoComplete" behavior?

I know the installation of the AJAX Toolbox was a bit messy (Installed on one PC, copied over, uninstalled, re-installed etc) which may or may not have some bearing. (Version 4.1.7.725.) Also, the page also makes use of the Modernizr-2.6.2.js scripting, though I believe the latter is a self-contained 50kb file.

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Bob Learned

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Craig Beamson

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Have begun to read this and all seems to be the right kind of stuff. There's a lot to apply, so think I'll have to go through this with a bit more leisure!