This hack does not conflict with anything. Other hacks conflict with it.
Also, about the 40 queries or whatever: I just realized what was causing it.
These are the editlevels that are calculated for each post (which is done for the purpose of hiding the edit button on uneditable posts). Right now, the way to avoid too many queries is to have less posts per page. Later, I'll fix the problem by removing the calculation (which will cause a print_no_permission() to appear) upon an attempt to edit an uneditable post, but that's better than queries.