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OK, back to programming, as this is not a political blog.  Apparently there's some trouble with the .NET Framework Service Pack 1.  I personally have not experienced this problem, and I have to admin that it's so obviously weird that I am suspicious that it is in fact a bug.  Lots of stuff should/could never have worked if it is.  It's likely an install/permissions related bug.  That said, here's the details from a recent series of posts on Channel9.

Symptoms

• ASP.NET Forms stop posting back when they have validators on them
• Errors in Event Viewer like "Failed while copying the ASP.NET client side script files to directories under D:\Whatever. Error code: 80070005"

Fix/Potential Fix

• Copy a PRE-SP1 version of WebUiValidation.js over the one you have in aspnet_client.
• Certainly make sure you HAVE an aspnet_client folder either in that directory or mapped in another VDIR. (This is a common and unrelated problem.)

I'll get the details/diffs on the changes in this file and post them soon.