Hello, I would like to report my experience with notmuch (newbie here). I absolutely love it. I would like very much to continue using it, but I am having a speed issue from inside Emacs. I have installed notmuch 0.9, on OS X 10.6, using of course the chert database format. I am also using Emacs 24.0.90.1 on a quad-core Intel Core i7 (no SSD though). I started doing 'notmuch new' on a Maildir folder with about 30000 messages (about one fourth of my archive). At beginning notmuch was indexing about 200 msgs/sec. The more it indexed, the slower it became. After about 20000 msgs it slowed down to 70 msgs/sec. I am not sure if that is a behaviour due to Xapian. Anyway, after it finished that first part, starting notmuch from inside emacs, it says: "Welcome to notmuch. You have 34,366 messages." Once I start browsing the inbox (34,208), Emacs displays the initial screenful, but the whole list takes quite a while to load, about 50 seconds. After that time, in the status bar I see "Top of 1.1M". That happens every time I am browsing the inbox, in order to assign proper tags. The real issue for me, though, is that scrolling down the list has a noticeable delay, enough to make it basically unusable. Is there something I do not know that I should do to improve that speed (either from within Emacs, or in notmuch config file? I would be very grateful for any advice or pointer on how to speed up the notmuch experience. Thank you, Sam