Hi, I've been using and modifying your theme for the past week or so. Overall it is a very nice and professional looking theme. Thanks for making it!
There's a few issues we've had to address while using it.
1. A few of the small icons have single, white pixels in their corners. Notably images/english/new.gif and the 4 "star" icons (star.gif, staradmin.gif, starmod.gif, stargmod.gif).
2. The #topbar div is too small when you're not logged in and you have "Show a quick login on every page" enabled (the quick login area becomes too large).
3. The "(No) New Posts" icons seemed a little hard to distinguish for me (off.png and on.png).
4. There's a general lack of color--which I think makes it harder to attract users' attention.
That said, your template has been an invaluable starting point for my website. I hope I can help by returning this feedback.