Shouldn't this effect happen in MoR as well?
During the Christmas break, Quirrellmort was able to get as far as the Verres-Evans garden, so if the protection is in place it extends at most to the physical walls of the house, which isn't much - first, because Harry isn't likely to stay secluded (and even if he swears to do so, his parents won't, and while outside of Dumbledore's authority he is susceptible to blackmail), and second, because there are probably sufficiently creative solutions to that little snafu (hijack and crash an airplane on the house? I doubt the Power of Love super-enchantment turned the building into an adamantium-darksteel nuclear bunker).
During the Christmas break, Quirrellmort was able to get as far as the Verres-Evans garden, so if the protection is in place it extends at most to the physical walls of the house, which isn't much
In canon, it certainly doesn't extend to Harry's wandering about on the streets, which is a huge hole in the protection (making it necessary for the OotP to tail him whenever he leaves the house).
Update: Discussion has moved on to a new thread.
After 61 chapters of Harry Potter and the Methods of Rationality and 5 discussion threads with over 500 comments each, HPMOR discussion has graduated from the main page and moved into the Less Wrong discussion section (which seems like a more appropriate location). You can post all of your insights, speculation, and, well, discussion about Eliezer Yudkowsky's Harry Potter fanfic here.
Previous threads are available under the harry_potter tag on the main page (or: one, two, three, four, five); this and future threads will be found under the discussion section tag (since there is a separate tag system for the discussion section). See also the author page for (almost) all things HPMOR, and AdeleneDawner's Author's Notes archive for one thing that the author page is missing.
As a reminder, it's useful to indicate at the start of your comment which chapter you are commenting on. Time passes but your comment stays the same.
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: