root@mars:/mnt# ls -la
total 44
drwxr-xr-x 12 root root 4096 Dec 10 12:44 .
drwxr-xr-x 24 root root 4096 Dec 9 13:00 ..
drwxr-xr-x 2 root root 4096 Aug 18 2002 auto
drwxr-xr-x 2 root root 4096 Oct 4 14:18 bootfloppy
drwxr-xr-x 2 root root 4096 Dec 9 08:10 cdrom
lrwxrwxrwx 1 root root 16 Dec 9 07:08 floppy -> /mnt/auto/floppy
drwx------ 1 root root 8192 Dec 10 18:16 hda1
drwxr-xr-x 2 root root 4096 Dec 9 07:23 hdb1
drwxr-xr-x 2 root root 4096 Dec 9 07:23 hdc5
drwxr-xr-x 2 root root 4096 Dec 10 12:44 jupiter
drwxr-xr-x 2 root root 4096 Oct 4 14:19 miniroot
drwxr-xr-x 2 root root 4096 May 30 2001 test
drwxr-xr-x 2 root root 4096 Dec 9 07:31 wind

this is what it looks like when hda1 IS mounted. and hdb1 is not. It contains the correct mode or whatever, so that other users can read it. Then as soon as I mount the drive it looks like this.

drwxr-xr-x 12 root root 4096 Dec 10 12:44 .
drwxr-xr-x 24 root root 4096 Dec 9 13:00 ..
drwxr-xr-x 2 root root 4096 Aug 18 2002 auto
drwxr-xr-x 2 root root 4096 Oct 4 14:18 bootfloppy
drwxr-xr-x 2 root root 4096 Dec 9 08:10 cdrom
lrwxrwxrwx 1 root root 16 Dec 9 07:08 floppy -> /mnt/auto/floppy
drwx------ 1 root root 8192 Dec 10 18:16 hda1
drwx------ 1 root root 114688 Dec 10 18:46 hdb1
drwxr-xr-x 2 root root 4096 Dec 9 07:23 hdc5
drwxr-xr-x 2 root root 4096 Dec 10 12:44 jupiter
drwxr-xr-x 2 root root 4096 Oct 4 14:19 miniroot
drwxr-xr-x 2 root root 4096 May 30 2001 test
drwxr-xr-x 2 root root 4096 Dec 9 07:31 wind

As you can see the drives that are mounted lose their access permissions ? But like I said the cdrom is readable by squeegy when mounted.