Picked up my Streak from Rogers at 5:30 pm, had it jailbroken and Froyo'd by midnight. Used QDL tools on Windows 7 Ultimate 32bit, just hit the video pause key while I did each step. Worked perfectly the first time. Nothing to backup. Found the Image loaded by QDL tools to be buggy. System would reset randomly while not in use. Had issues with Bluetooth audio path on occasion. Just finished putting the official Dell image on a few minutes ago. Smooth.
Took a while to stumble across the right way to do it (press BOTH volume buttons while powering up)...
Thanks to the folks at QDL and the folks here at myDellMini. Next trick is OneClick to root it....