I'm sure that is what it is supposed to to Hugo, on my unit it does something a little different.

On some songs it does this behaviour of spinning up for about 7 seconds then spinning down. However on other songs it spins up at the start of the song and stays spun up all the way through it. I am still trying to pin down exactly when this happens, it appears to be connected with the position in the playlist as opposed to the actual MP3, because sometimes the unit will cache correctly on a single MP3, but only when the MP3 is played from a particular playlist...

Number 330 in the queue...