In the last few months my TC1100 with win7 is behaving really strange. Basically, it just rotates by itself when it's on the dock station.
It turns during normal usage and I think that when it starts the HDD starts spinning a lot quicker as well.
I read something similar here (similar auto-rotate issue), but after a lot of messing around with all the settings it keeps misbehaving.
Have you ever experienced this issue or have any idea about what I could try next?