netbsd@precedence.co.uk (Stephen Borrill) writes:

>To follow myself up, here's the relevant output with usbdebug and 
>uhcidebug set to 10 as I plug in the pendrive with a usb mouse plugged in:

This looks like uhub_explore.

Can you please repeat the test with uhubdebug set to 10 as well?

-- 
-- 
                                Michael van Elst
Internet: mlelstv@serpens.de
                                "A potential Snark may lurk in every tree."