I'm find an issue on some machines I administer where, upon plugging in a USB device, Windows takes forever 'searching preconfigured driver folders' for the device driver. This includes USB disks, which I would imaging should be quite fast. I have configured the machines not to use Windows Update to look for the drivers, which sped things up on some machines, but it still seems to be taking way too long to recognise a simple USB device. Once installed, re-plugging the same device into the same USB port is very fast, but plugging it into a different port on the same machine gets the same issue. The C:\Windows\System32\DriverStore directory weighs in at almost 1 GB - not too much bigger than a clean install on that machine type (830 MB) (a clean windows install on this hardware installs devices super-fast).