HD led always on after 'mount /cdrom'

I just noticed that after
    mount /cdrom

the disk led on the case of the box lights on, and returns off only 
after 'umount /cdrom'

The drive is a Samsung WriteMaster DVD-R.

I attach outout of dmesg, let me know how I could provide more info, in 
case you need it.

Angelo Turetta



root_at_stable# uname -a
FreeBSD stable.home.commit.it 6.0-BETA2 FreeBSD 6.0-BETA2 #1: Tue Aug  9 
15:33:25 CEST 2005 
aturetta_at_stable.home.commit.it:/usr/obj/usr/src/sys/GENERIC  i386
root_at_stable# dmesg
Copyright (c) 1992-2005 The FreeBSD Project.
Copyright (c) 1979, 1980, 1983, 1986, 1988, 1989, 1991, 1992, 1993, 1994
         The Regents of the University of California. All rights reserved.
FreeBSD 6.0-BETA2 #1: Tue Aug  9 15:33:25 CEST 2005
     aturetta_at_stable.home.commit.it:/usr/obj/usr/src/sys/GENERIC
WARNING: WITNESS option enabled, expect reduced performance.
Timecounter "i8254" frequency 1193182 Hz quality 0
CPU: Intel(R) Pentium(R) 4 CPU 1.70GHz (1703.87-MHz 686-class CPU)
   Origin = "GenuineIntel"  Id = 0xf12  Stepping = 2
 
Features=0x3febfbff<FPU,VME,DE,PSE,TSC,MSR,PAE,MCE,CX8,APIC,SEP,MTRR,PGE,MCA,CMOV,PAT,PSE36,CLFLUSH,DTS,ACPI,MMX,FXSR,SSE,SSE2,SS,HTT,TM>
real memory  = 536805376 (511 MB)
avail memory = 515796992 (491 MB)
ACPI APIC Table: <IntelR AWRDACPI>
ioapic0 <Version 2.0> irqs 0-23 on motherboard
npx0: [FAST]
npx0: <math processor> on motherboard
npx0: INT 16 interface
acpi0: <IntelR AWRDACPI> on motherboard
acpi0: Power Button (fixed)
pci_link0: <ACPI PCI Link LNKA> irq 9 on acpi0
pci_link1: <ACPI PCI Link LNKB> irq 11 on acpi0
pci_link2: <ACPI PCI Link LNKC> irq 11 on acpi0
pci_link3: <ACPI PCI Link LNKD> irq 11 on acpi0
pci_link4: <ACPI PCI Link LNKE> irq 0 on acpi0
pci_link5: <ACPI PCI Link LNKF> irq 0 on acpi0
pci_link6: <ACPI PCI Link LNK0> irq 0 on acpi0
pci_link7: <ACPI PCI Link LNK1> irq 5 on acpi0
Timecounter "ACPI-fast" frequency 3579545 Hz quality 1000
acpi_timer0: <24-bit timer at 3.579545MHz> port 0x4008-0x400b on acpi0
cpu0: <ACPI CPU> on acpi0
acpi_button0: <Power Button> on acpi0
acpi_button1: <Sleep Button> on acpi0
pcib0: <ACPI Host-PCI bridge> port 0xcf8-0xcff,0x5000-0x500f on acpi0
pci0: <ACPI PCI bus> on pcib0
agp0: <Intel 82845 host to AGP bridge> mem 0xe8000000-0xebffffff at 
device 0.0 on pci0
pcib1: <PCI-PCI bridge> at device 1.0 on pci0
pci1: <PCI bus> on pcib1
pci1: <display, VGA> at device 0.0 (no driver attached)
pcib2: <ACPI PCI-PCI bridge> at device 30.0 on pci0
pci2: <ACPI PCI bus> on pcib2
dc0: <Davicom DM9102A 10/100BaseTX> port 0xc000-0xc0ff mem 
0xef000000-0xef0000ff irq 18 at device 6.0 on pci2
miibus0: <MII bus> on dc0
ukphy0: <Generic IEEE 802.3u media interface> on miibus0
ukphy0:  10baseT, 10baseT-FDX, 100baseTX, 100baseTX-FDX, auto
dc0: Ethernet address: 00:08:a1:26:00:a0
dc1: <Intel 21143 10/100BaseTX> port 0xc400-0xc47f mem 
0xef001000-0xef0013ff irq 23 at device 11.0 on pci2
miibus1: <MII bus> on dc1
dcphy0: <Intel 21143 NWAY media interface> on miibus1
dcphy0:  10baseT, 10baseT-FDX, 100baseTX, 100baseTX-FDX, auto
dc1: Ethernet address: 00:48:54:02:af:b1
isab0: <PCI-ISA bridge> at device 31.0 on pci0
isa0: <ISA bus> on isab0
atapci0: <Intel ICH2 UDMA100 controller> port 
0x1f0-0x1f7,0x3f6,0x170-0x177,0x376,0xf000-0xf00f at device 31.1 on pci0
ata0: <ATA channel 0> on atapci0
ata1: <ATA channel 1> on atapci0
uhci0: <Intel 82801BA/BAM (ICH2) USB controller USB-A> port 
0xd000-0xd01f irq 19 at device 31.2 on pci0
uhci0: [GIANT-LOCKED]
usb0: <Intel 82801BA/BAM (ICH2) USB controller USB-A> on uhci0
usb0: USB revision 1.0
uhub0: Intel UHCI root hub, class 9/0, rev 1.00/1.00, addr 1
uhub0: 2 ports with 2 removable, self powered
uhci1: <Intel 82801BA/BAM (ICH2) USB controller USB-B> port 
0xd800-0xd81f irq 23 at device 31.4 on pci0
uhci1: [GIANT-LOCKED]
usb1: <Intel 82801BA/BAM (ICH2) USB controller USB-B> on uhci1
usb1: USB revision 1.0
uhub1: Intel UHCI root hub, class 9/0, rev 1.00/1.00, addr 1
uhub1: 2 ports with 2 removable, self powered
pci0: <multimedia, audio> at device 31.5 (no driver attached)
acpi_tz0: <Thermal Zone> on acpi0
fdc0: <floppy drive controller> port 0x3f0-0x3f5,0x3f7 irq 6 drq 2 on acpi0
fdc0: [FAST]
sio0: <16550A-compatible COM port> port 0x3f8-0x3ff irq 4 flags 0x10 on 
acpi0
sio0: type 16550A
sio1: <16550A-compatible COM port> port 0x2f8-0x2ff irq 3 on acpi0
sio1: type 16550A
ppc0: <Standard parallel printer port> port 0x378-0x37f,0x778-0x77b irq 
7 on acpi0
ppc0: Generic chipset (NIBBLE-only) in COMPATIBLE mode
ppbus0: <Parallel port bus> on ppc0
plip0: <PLIP network interface> on ppbus0
lpt0: <Printer> on ppbus0
lpt0: Interrupt-driven port
ppi0: <Parallel I/O> on ppbus0
atkbdc0: <Keyboard controller (i8042)> port 0x60,0x64 irq 1 on acpi0
atkbd0: <AT Keyboard> irq 1 on atkbdc0
kbd0 at atkbd0
atkbd0: [GIANT-LOCKED]
psm0: <PS/2 Mouse> irq 12 on atkbdc0
psm0: [GIANT-LOCKED]
psm0: model GlidePoint, device ID 0
pmtimer0 on isa0
orm0: <ISA Option ROMs> at iomem 0xc0000-0xcc7ff,0xd0000-0xd3fff on isa0
sc0: <System console> at flags 0x100 on isa0
sc0: VGA <16 virtual consoles, flags=0x300>
vga0: <Generic ISA VGA> at port 0x3c0-0x3df iomem 0xa0000-0xbffff on isa0
Timecounter "TSC" frequency 1703874768 Hz quality 800
Timecounters tick every 1.000 msec
ad0: 38172MB <MAXTOR 6L040J2 AR1.0500> at ata0-master UDMA100
ad1: 19541MB <Maxtor 2B020H1 WAH21PB0> at ata0-slave UDMA100
acd0: DVDR <TSSTcorpCD/DVDW TS-H552B/TS03> at ata1-master UDMA33
ad3: 78167MB <Maxtor 6Y080L0 YAR41BW0> at ata1-slave UDMA100