Description of problem:
I've recently installed FC12 64 bit, and i get the follwing messages from syslogd

Aug  9 14:35:14 xyz kernel: do_IRQ: 5.118 No irq handler for vector (irq -1)
Aug 10 00:16:31 xyz kernel: do_IRQ: 2.147 No irq handler for vector (irq -1)
Aug 10 06:20:07 xyz kernel: do_IRQ: 5.151 No irq handler for vector (irq -1)
Aug 10 09:12:15 xyz kernel: do_IRQ: 5.158 No irq handler for vector (irq -1)
Aug 10 09:29:35 xyz kernel: do_IRQ: 2.146 No irq handler for vector (irq -1)
Aug 10 09:55:24 xyz kernel: do_IRQ: 2.88 No irq handler for vector (irq -1)
Aug 10 10:33:44 xyz kernel: do_IRQ: 2.232 No irq handler for vector (irq -1)
Aug 10 11:47:44 xyz kernel: do_IRQ: 5.106 No irq handler for vector (irq -1)
Aug 10 12:49:14 xyz kernel: do_IRQ: 5.228 No irq handler for vector (irq -1)
Aug 11 09:35:44 xyz kernel: do_IRQ: 5.183 No irq handler for vector (irq -1)
Aug 11 12:10:54 xyz kernel: do_IRQ: 2.71 No irq handler for vector (irq -1)
Aug 12 12:03:44 xyz kernel: do_IRQ: 1.153 No irq handler for vector (irq -1)
Aug 12 12:42:57 xyz kernel: do_IRQ: 2.116 No irq handler for vector (irq -1)
Aug 12 13:51:44 xyz kernel: do_IRQ: 5.200 No irq handler for vector (irq -1)
Aug 12 16:32:34 xyz kernel: do_IRQ: 5.203 No irq handler for vector (irq -1)
Aug 12 20:01:34 xyz kernel: do_IRQ: 2.157 No irq handler for vector (irq -1)
Aug 12 21:52:14 xyz kernel: do_IRQ: 5.73 No irq handler for vector (irq -1)
Aug  4 11:36:54 xyz kernel: do_IRQ: 2.169 No irq handler for vector (irq -1)

Linux xyz 2.6.32.9-70.fc12.x86_64 #1 SMP Wed Mar 3 04:40:41 UTC 2010 x86_64 x86_64 x86_64 GNU/Linux

the last install package
lgtoclnt-7.2.2-1                              Thu 05 Aug 2010 01:18:05 PM CEST
lm_sensors-3.1.2-2.fc12                       Tue 03 Aug 2010 03:10:22 PM CEST
postgresql-libs-old-9.9.9-9                   Thu 01 Jul 2010 04:27:55 PM CEST
openssh-clients-9.9p9-9                       Thu 01 Jul 2010 04:27:55 PM CEST

xyz-log # ps -ef|grep -i irq
root         4     2  0 Jul01 ?        00:00:00 [ksoftirqd/0]
root         7     2  0 Jul01 ?        00:00:03 [ksoftirqd/1]
root        10     2  0 Jul01 ?        00:00:01 [ksoftirqd/2]
root        13     2  0 Jul01 ?        00:00:01 [ksoftirqd/3]
root        16     2  0 Jul01 ?        00:00:02 [ksoftirqd/4]
root        19     2  0 Jul01 ?        00:00:00 [ksoftirqd/5]
root        22     2  0 Jul01 ?        00:00:00 [ksoftirqd/6]
root        25     2  0 Jul01 ?        00:00:00 [ksoftirqd/7]
root        28     2  0 Jul01 ?        00:00:00 [ksoftirqd/8]
root        31     2  0 Jul01 ?        00:00:05 [ksoftirqd/9]
root        34     2  0 Jul01 ?        00:00:01 [ksoftirqd/10]
root        37     2  0 Jul01 ?        00:00:02 [ksoftirqd/11]
root        40     2  0 Jul01 ?        00:00:15 [ksoftirqd/12]
root        43     2  0 Jul01 ?        00:00:06 [ksoftirqd/13]
root        46     2  0 Jul01 ?        00:00:00 [ksoftirqd/14]
root        49     2  0 Jul01 ?        00:00:00 [ksoftirqd/15]
root      1473     2  0 Jul01 ?        00:00:00 [kvm-irqfd-clean]
root      1921     1  0 Jul01 ?        00:06:22 irqbalance
root     17408 19199  0 14:41 pts/8    00:00:00 grep -i irq

xyz-log # more /proc/cpuinfo 
processor       : 0
vendor_id       : GenuineIntel
cpu family      : 6
model           : 26
model name      : Intel(R) Xeon(R) CPU           X5560  @ 2.80GHz
stepping        : 5
cpu MHz         : 2794.000
cache size      : 8192 KB
physical id     : 0
siblings        : 8
core id         : 0
cpu cores       : 4
apicid          : 0
initial apicid  : 0
fpu             : yes
fpu_exception   : yes
cpuid level     : 11
wp              : yes
flags           : fpu vme de pse tsc msr pae mce cx8 apic mtrr pge mca cmov pat pse36 clflush dts acpi mmx fxsr sse sse2 
ss ht tm pbe syscall nx rdtscp lm constant_tsc arch_perfmon pebs bts rep_good xtopology nonstop_tsc aperfmperf pni dtes64
 monitor ds_cpl vmx est tm2 ssse3 cx16 xtpr pdcm dca sse4_1 sse4_2 popcnt lahf_lm ida tpr_shadow vnmi flexpriority ept vp
id
bogomips        : 5600.11
clflush size    : 64
cache_alignment : 64
address sizes   : 40 bits physical, 48 bits virtual
power management:

how i can fix this error ?