The rampaging X10nets.exe problem happened to me after these automatic Microsoft Updates this morning:
Update for Microsoft Silverlight (KB2495644)
Installation date: ?3/?17/?2011 3:02 AM
Installation status: Successful
Update type: Important
This update to Silverlight improves security, reliability, accessibility support, startup performance, enhances line-of-business support and includes several fixes to better support rich internet applications. This update is backward compatible with web applications built using previous versions of Silverlight.
More information:
http://go.microsoft.com/fwlink/?LinkId=208901Help and Support:
http://go.microsoft.com/fwlink/?LinkID=105787Update for Windows Vista (KB971029)
Installation date: ?3/?17/?2011 3:01 AM
Installation status: Successful
Update type: Important
Install this update to restrict AutoRun entries in the AutoPlay dialog to only CD and DVD drives. After you install this item, you may have to restart your computer.
More information:
http://support.microsoft.com/kb/971029Help and Support:
http://support.microsoft.com(The Vista update had failed previously)
Update for Windows Vista (KB971029)
Installation date: ?3/?15/?2011 11:37 PM
Installation status: Failed
Error details: Code 80070005
Update type: Important
Install this update to restrict AutoRun entries in the AutoPlay dialog to only CD and DVD drives. After you install this item, you may have to restart your computer.
More information:
http://support.microsoft.com/kb/971029Help and Support:
http://support.microsoft.com------
But I also had another problem at the same time with an apparently corrupted PDF file stuck on an HP printer queue. This happened to me once before (the PDF was sent from the same real estate office), and I think it is related to how Adobe Acrobat formats the file for printing (vs. the way Adobe Reader formats it, apparently much better, since it doesn't get stuck on queue if printed from Reader).
I was able to clear the queue with HP Print Diagnostic utility. Then removed Acrobat and installed Reader on my wife's laptop computer.
I have no idea if the two problems are related, but it was highly coincidental. anyway, FWIW.