Yes, I have noticed this too, only on 2.1.x kernels. Doing 'shutdown -r now' seems to take care of it for me.
> Subject: Re: fs not umounted at CTL-ALT-DEL > > On Sun, Oct 25 1998, D'jinnie spake thus: > > > I had this problem right before my hd went bad :( It might be very prudent > > to run fsck on it... > > hmm...i've only had this problem running 2.1.x kernels, not stock hamm 2.0.34.