Error updating sensor CPU

I have the same problem after upgrade 10.10 -> 11.04 final
The bug occurs sometimes only.
Status over libsensors is O.K. Only acpi seems to be affected.

$ sudo sensors
acpitz-virtual-0
Adapter: Virtual device
temp1: +54.0°C (crit = +105.0°C)

k10temp-pci-00c3
Adapter: PCI adapter
temp1: +60.6°C (high = +70.0°C)

$ uname -a
Linux turion 2.6.38-8-generic #42-Ubuntu SMP Mon Apr 11 03:31:24 UTC 2011 x86_64 x86_64 x86_64 GNU/Linux

sensors-applet: 2.2.7-2ubuntu2
lm-sensors: 1:3.2.0-1ubuntu1
libsensors-applet-plugin0: 2.2.7-2ubuntu2

I have the same problem after upgrading from 10.10 --> 11.04

Sensors-Detect says it detects it87 chip

Sensors-Detect:

mangrove@mangrove:~$ sudo sensors-detect
[sudo] password for mangrove:
# sensors-detect revision 5861 (2010-09-21 17:21:05 +0200)
# System: FOXCONN M61PMV

This program will help you determine which kernel modules you need
to load to use lm_sensors most effectively. It is generally safe
and recommended to accept the default answers to all questions,
unless you know what you're doing.

Some south bridges, CPUs or memory controllers contain embedded sensors.
Do you want to scan for them? This is totally safe. (YES/no): YES
Module cpuid loaded successfully.
Silicon Integrated Systems SIS5595... No
VIA VT82C686 Integrated Sensors... No
VIA VT8231 Integrated Sensors... No
AMD K8 thermal sensors... No
AMD Family 10h thermal sensors... Success!
    (driver `k10temp')
AMD Family 11h thermal sensors... No
Intel digital thermal sensor... No
Intel AMB FB-DIMM thermal sensor... No
VIA C7 thermal sensor... No
VIA Nano thermal sensor... No

Some Super I/O chips contain embedded sensors. We have to write to
standard I/O ports to probe them. This is usually safe.
Do you want to scan for Super I/O sensors? (YES/no): YES
Probing for Super-I/O at 0x2e/0x2f
Trying family `National Semiconductor'... No
Trying family `SMSC'... No
Trying family `VIA/Winbond/Nuvoton/Fintek'... No
Trying family `ITE'... Yes
Found `ITE IT8716F Super IO Sensors' Success!
    (address 0x290, driver `it87')
Probing for Super-I/O at 0x4e/0x4f
Trying family `National Semiconductor'... No
Trying family `SMSC'... No
Trying family `VIA/Winbond/Nuvoton/Fintek'... No
Trying family `ITE'... No

Some systems (mainly servers) implement IPMI, a set of common interfaces
through which system health data may be retrieved, amongst other things.
We first try to get the information from SMBIOS. If we don't find it
there, we have to read from arbitrary I/O ports to probe for such
interfaces. This is normally safe. Do you want to scan for IPMI
interfaces? (YES/no): YES
Probing for `IPMI BMC KCS' at 0xca0... No
Probing for `IPMI BMC SMIC' at 0xca8... No

Some hardware monitoring chips are accessible through the ISA I/O ports.
We have to write to arbitrary I/O ports to probe them. This is usually
safe though. Yes, you do have ISA I/O ports even if you do not have any
ISA slots! Do you want to scan the ISA I/O ports? (yes/NO): yes
Probing for `National Semiconductor LM78' at 0x290... No
Probing for `National Semiconductor LM79' at 0x290... No
Probing for `Winbond W83781D' at 0x290... No
Probing for `Winbond W83782D' ...

Just updated from 10.10 to 11.04, and getting the same error.

$ sudo sensors
acpitz-virtual-0
Adapter: Virtual device
temp1: +40.0°C (crit = +75.0°C)

k8temp-pci-00c3
Adapter: PCI adapter
Core0 Temp: +32.0°C
Core1 Temp: +23.0°C

atk0110-acpi-0
Adapter: ACPI interface
Vcore Voltage: +1.10 V (min = +1.45 V, max = +1.75 V)
 +3.3 Voltage: +3.25 V (min = +3.00 V, max = +3.60 V)
 +5.0 Voltage: +4.95 V (min = +4.50 V, max = +5.50 V)
+12.0 Voltage: +11.97 V (min = +11.20 V, max = +13.20 V)
CPU FAN Speed: 1350 RPM (min = 0 RPM)
CHASSIS FAN Speed: 0 RPM (min = 0 RPM)
CHIPSET FAN Speed: 0 RPM (min = 0 RPM)
CPU Temperature: +34.0°C (high = +90.0°C, crit = +125.0°C)
MB Temperature: +34.0°C (high = +70.0°C, crit = +125.0°C)

$ uname -a
Linux daan-desktop 2.6.38-8-generic #42-Ubuntu SMP Mon Apr 11 03:31:50 UTC 2011 i686 athlon i386 GNU/Linux

sensors-applet: 2.2.7-2ubuntu2
lm-sensors: 1:3.2.0-1ubuntu1
libsensors-applet-plugin0: 2.2.7-2ubuntu2

Summary of sensors-detect:

Driver `it87':
  * ISA bus, address 0x290
    Chip `ITE IT8712F Super IO Sensors' (confidence: 9)

Driver `lm90':
  * Bus `NVIDIA i2c adapter '
    Busdriver `nvidia', I2C address 0x4c
    Chip `National Semiconductor LM89/LM99' (confidence: 8)

Driver `k8temp' (autoloaded):
  * Chip `AMD K8 thermal sensors' (confidence: 9)

To load everything that is needed, add this to /etc/modules:
#----cut here----
# Chip drivers
it87
lm90
#----cut here----
If you have some drivers built into your kernel, the list above will
contain too many modules. Skip the appropriate ones!

Probably caused by bug #670511.