I also find it impossible to believe that Hermione lost to Malfoy, she just beat him fair & square in battle. That certainly sounds like a false memory.
They were pretty evenly matched during the Chapter 78 battle, and Draco was a bit drained from charming all the gloves, so it's by no means impossible that Draco beat Hermoine. I expect if they had 10 duels, each would win at least a few.
But it is true that our only sources regarding the outcome of the duel are Draco and Hermoine's memories along with Quirrell's testimony. If those memories were placed by Hat and Cloak, and if Hat and Cloak is Quirrel, then all of our information about what happened between midnight and 6.33am is based on what Quirrell wants us to know. The only bit that is confirmed by another party is that Draco was indeed at some point unconscious in the trophy room.
(The HPMOR discussion thread after this one is here.)
This is a new thread to discuss Eliezer Yudkowsky's Harry Potter and the Methods of Rationality and anything related to it. There haven't been any chapters recently, but it looks like there are a bunch in the pipeline and the old thread is nearing 700 comments. The latest chapter as of 7th March 2012 is Ch. 77.
There is now a site dedicated to the story at hpmor.com, which is now the place to go to find the authors notes and all sorts of other goodies. AdeleneDawner has kept an archive of Author's Notes.
The first 5 discussion threads are on the main page under the harry_potter tag. Threads 6 and on (including this one) are in the discussion section using its separate tag system. Also: one, two, three, four, five, six, seven, eight, nine.
As a reminder, it's often useful to start your comment by indicating which chapter you are commenting on.
Spoiler Warning: this thread is full of spoilers. With few exceptions, spoilers for MOR and canon are fair game to post, without warning or rot13. More specifically: