Found a Vista patch that “improves the compatibility, reliability, and stability of Windows Vista”.

Well, actually, my machine found it through “problem reports and solutions” (great Vista feature) after it crashed  J

 

An update is available that improves the compatibility, reliability, and stability of Windows Vista

 

I have no idea why this update is not available as an option on Windows Update.

You might want to download it anyway to improve your “user experience”.

 

And a colleague of mine has pointed me towards:

Cumulative update rollup for USB core components in Windows Vista

 

I'll have a look around for more...