Ubuntu 10.10 is frozen

The operating system is frozen at the time of use, must be shut with the button
ignition.
Sometimes the computer does not fail and can spend hours without fail. Other times it freezes at some time.

ProblemType: Bug
DistroRelease: Ubuntu 10.10
Package: linux-image-2.6.35-22-generic 2.6.35-22.34
Regression: Yes
Reproducible: Yes
ProcVersionSignature: Ubuntu 2.6.35-22.34-generic 2.6.35.4
Uname: Linux 2.6.35-22-generic x86_64
AlsaVersion: Advanced Linux Sound Architecture Driver Version 1.0.23.
Architecture: amd64
ArecordDevices:
 **** List of CAPTURE Hardware Devices ****
 card 0: Intel [HDA Intel], device 0: ALC269 Analog [ALC269 Analog]
   Subdevices: 1/1
   Subdevice #0: subdevice #0
AudioDevicesInUse:
 USER PID ACCESS COMMAND
 /dev/snd/controlC0: acer 1462 F.... pulseaudio
 /dev/snd/pcmC0D0p: acer 1462 F...m pulseaudio
CRDA: Error: [Errno 2] No existe el archivo o directorio
Card0.Amixer.info:
 Card hw:0 'Intel'/'HDA Intel at 0xd4500000 irq 46'
   Mixer name : 'Intel Cantiga HDMI'
   Components : 'HDA:10ec0269,1025029b,00100004 HDA:80862802,80860101,00100000'
   Controls : 21
   Simple ctrls : 10
Date: Thu Oct 14 23:57:51 2010
HibernationDevice: RESUME=UUID=d10df61d-fd56-4a17-a570-bf3ea1257d7b
InstallationMedia: Ubuntu 10.10 "Maverick Meerkat" - Release amd64 (20101007)
MachineType: Acer Aspire 1410
ProcCmdLine: BOOT_IMAGE=/boot/vmlinuz-2.6.35-22-generic root=UUID=c604c5f5-e1ff-4edf-9cc3-d2db0d45846f ro quiet splash
ProcEnviron:
 LANG=es_ES.utf8
 SHELL=/bin/bash
RelatedPackageVersions: linux-firmware 1.38
RfKill:
 0: phy0: Wireless LAN
  Soft blocked: no
  Hard blocked: no
SourcePackage: linux
dmi.bios.date: 08/14/2009
dmi.bios.vendor: INSYDE
dmi.bios.version: v0.3115
dmi.board.asset.tag: Base Board Asset Tag
dmi.board.name: Base Board Product Name
dmi.board.vendor: Acer
dmi.board.version: Base Board Version
dmi.chassis.type: 1
dmi.chassis.vendor: Chassis Manufacturer
dmi.chassis.version: Chassis Version
dmi.modalias: dmi:bvnINSYDE:bvrv0.3115:bd08/14/2009:svnAcer:pnAspire1410:pvrv0.3115:rvnAcer:rnBaseBoardProductName:rvrBaseBoardVersion:cvnChassisManufacturer:ct1:cvrChassisVersion:
dmi.product.name: Aspire 1410
dmi.product.version: v0.3115
dmi.sys.vendor: Acer