Wish it did for me! I'm using 6.40 on my Asus T91MT running Win7 home premium. Calibre ebook viewer doesn't remember my place if I have to close it for some reason. Never has. I have to use the bookmark function.
Also - I REALLY hate to mention this, but page turn buttons on both sides would be wonderful. I know you can move the taskbar from side to side or even the bottom, but having just the page turn buttons available on either side would be really handy.