Please describe the problem:
Very, very hard to increase volume in gnome-volume-control.
The volume is increased by fractions of seconds and decreased to zero.

How reproducible:
Hardware like this:
[root@localhost ~]# lspci
00:00.0 Memory controller: nVidia Corporation CK804 Memory Controller (rev a3)
00:01.0 ISA bridge: nVidia Corporation CK804 ISA Bridge (rev f3)
00:01.1 SMBus: nVidia Corporation CK804 SMBus (rev a2)
00:02.0 USB Controller: nVidia Corporation CK804 USB Controller (rev a2)
00:02.1 USB Controller: nVidia Corporation CK804 USB Controller (rev a3)
00:06.0 IDE interface: nVidia Corporation CK804 IDE (rev f2)
00:07.0 IDE interface: nVidia Corporation CK804 Serial ATA Controller (rev f3)
00:08.0 IDE interface: nVidia Corporation CK804 Serial ATA Controller (rev f3)
00:09.0 PCI bridge: nVidia Corporation CK804 PCI Bridge (rev f2)
00:0a.0 Bridge: nVidia Corporation CK804 Ethernet Controller (rev f3)
00:0b.0 PCI bridge: nVidia Corporation CK804 PCIE Bridge (rev f3)
00:0c.0 PCI bridge: nVidia Corporation CK804 PCIE Bridge (rev f3)
00:0d.0 PCI bridge: nVidia Corporation CK804 PCIE Bridge (rev f3)
00:0e.0 PCI bridge: nVidia Corporation CK804 PCIE Bridge (rev a3)
00:18.0 Host bridge: Advanced Micro Devices [AMD] K8 [Athlon64/Opteron]
HyperTransport Technology Configuration
00:18.1 Host bridge: Advanced Micro Devices [AMD] K8 [Athlon64/Opteron] Address
Map
00:18.2 Host bridge: Advanced Micro Devices [AMD] K8 [Athlon64/Opteron] DRAM
Controller
00:18.3 Host bridge: Advanced Micro Devices [AMD] K8 [Athlon64/Opteron]
Miscellaneous Control
01:01.0 FireWire (IEEE 1394): VIA Technologies, Inc. IEEE 1394 Host Controller
(rev c0)
01:07.0 Ethernet controller: Sundance Technology Inc / IC Plus Corp IC Plus
IP100A Integrated 10/100 Ethernet MAC + PHY (rev 31)
05:00.0 VGA compatible controller: nVidia Corporation GeForce 8600 GT (rev a1)

[root@localhost ~]# lsusb
Bus 001 Device 001: ID 1d6b:0002 Linux Foundation 2.0 root hub
Bus 002 Device 004: ID 0d8c:0201 C-Media Electronics, Inc. CM6501
Bus 002 Device 003: ID 062a:0003 Creative Labs 
Bus 002 Device 002: ID 0566:3001 Monterey International Corp. 
Bus 002 Device 001: ID 1d6b:0001 Linux Foundation 1.1 root hub

[fabricio@localhost ~]$ gst-launch --version
gst-launch-0.10 version 0.10.20
GStreamer 0.10.20
http://download.fedora.redhat.com/fedora



Steps to reproduce:
1. Open gnome-volume-control
2. Try adjust volume
3. 


Actual results:
Too many tries to get increased volume.
The channels don't stay locked together.
I can't increase volume more than ~55%.

Expected results:
Normal volume adjustment.

Does this happen every time?
Yes.

Other information:
ASUS M2N-E SLI motherboard