Description of problem:

During shut-down the system fails to unmount my filesystems cleanly. Mainly /usr
and /var (but also /home sometimes) fail to unmount with 'device or resource
busy', at the next boot most of the time orphaned inodes are found especially in
/usr (which I find very strange as I didn't do any recent writes to /usr). 

Version-Release number of selected component (if applicable):

initscripts-8.76.2-1.x86_64

How reproducible:


Steps to Reproduce:
1. Boot system
2. Shutdown
3. Press Ctrl-Alt-F7 to watch the shut-down process
  
Actual results:

/usr and /var fail to unmount repeatedly

Expected results:

all filesystems should get cleanly unmounted after all processes are killed

Additional info:

my filesystems are organised in a non vanilla way, maybe that's part of the problem:

sda->sw raid0->LVM->usr, var and home
sdb->sw raid0