I have a Hauppauge T500 DVB-T tuner. Any version of USBEHCI.SYS after the original SP2 generates 'instabilities' - shorthand for BSODs - with this card.
http://www.hauppauge.co.uk/board/sho...t=9888&page=28
I understand they have been able to track the fault back to Microsoft, and are talking to them - but SP3 will still hit it hard.
They seem to imply that this will apply to many other USB tuners.
I've taken my 2 non-MCE PCs to SP3 with no problem. I'll need a lot of convincing before I take my MCE to it.
PS The Hauppauge website seems to be broken at the moment. Coincidence?