Please describe the problem:
When changing the background within gnome, my CPU usage (both cores) jumps to between 50% and 100% CPU usage.

This is displayed from "top" and the Gnome System Monitor, closing the window does not reduce CPU usage, I have to kill the process.

Steps to reproduce:
1. Right click desktop, change background.
2. 
3. 


Actual results:
Background window opens fine, just takes a lot of CPU usage.

Expected results:
To open with around 1% CPU usage.

Does this happen every time?
Yes, sometimes randomly.

Other information:
crooksey@localhost ~ $ uname -a
Linux localhost 2.6.23-ARCH #1 SMP PREEMPT Tue Jan 15 06:34:36 UTC 2008 i686 Intel(R) Core(TM)2 CPU          6600  @ 2.40GHz GenuineIntel GNU/Linux

----------------------------

crooksey@localhost ~ $ cat /proc/cpuinfo 
processor       : 0
vendor_id       : GenuineIntel
cpu family      : 6
model           : 15
model name      : Intel(R) Core(TM)2 CPU          6600  @ 2.40GHz
stepping        : 6
cpu MHz         : 1795.530
cache size      : 4096 KB
physical id     : 0
siblings        : 2
core id         : 0
cpu cores       : 2
fdiv_bug        : no
hlt_bug         : no
f00f_bug        : no
coma_bug        : no
fpu             : yes
fpu_exception   : yes
cpuid level     : 10
wp              : yes
flags		: 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 ht tm pbe nx lm constant_tsc arch_perfmon pebs bts pni monitor ds_cpl vmx est tm2 ssse3 cx16 xtpr lahf_lm
bogomips	: 3594.08
clflush size	: 64

processor	: 1
vendor_id	: GenuineIntel
cpu family	: 6
model		: 15
model name	: Intel(R) Core(TM)2 CPU          6600  @ 2.40GHz
stepping	: 6
cpu MHz		: 1795.530
cache size	: 4096 KB
physical id	: 0
siblings	: 2
core id		: 1
cpu cores	: 2
fdiv_bug	: no
hlt_bug		: no
f00f_bug	: no
coma_bug	: no
fpu		: yes
fpu_exception	: yes
cpuid level	: 10
wp		: yes
flags		: 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 ht tm pbe nx lm constant_tsc arch_perfmon pebs bts pni monitor ds_cpl vmx est tm2 ssse3 cx16 xtpr lahf_lm
bogomips	: 3592.66
clflush size	: 64