If I import 25fps footage to use as an animated texture in a 25fps scene, the image editor shows the start frame incorrectly, somehow it interpolates the frames as 30fps. So to get my movie to start at the right time I have to type the frame I want then multiply it by 25/30. This bug has been around since 7.5 (At least). Very annoying for those of us fortunate enough to live in PAL countries.