kernel is unstable at versions after 3.8.0-27

[Eugene San]

Ubuntu Kernel became unstable at versions after 3.8.0-27.
3.8.0-27 was the last well working version, means recent 12.04.3 release is unstable!

Later versions (including 3.10.0 and 3.11.0) suffers from wide range of problems also.
Among them:
1. Hangs/Freezes (random, mainly at idle. Permanently on restart)
2. Soft lockups (mostly load related, react to pings but nothing else)
3. Scary errors in dmesg as (permanent):
   [ 11.855406] Buffer I/O error on device zram0, logical block 51329
4. Graphics artifacts, mainly "snow" like horizontal stripes.

Observed on next platforms:
* Reported VBox 4.3.0 (#3)
* Intel Atom330@NV75 (#3)
* Intel i5ULV@SandyBridge + Intel3000HD (#1, #3, #4)
* Intel i7@X58 + NVS300 (#1, #2, #3)

There was an improvement with #1 at Kernels starting 3.11.0-3, rest of the problems still there.

ProblemType: Bug
DistroRelease: Ubuntu 12.04
Package: linux-image-3.8.0-29-generic 3.8.0-29.42~precise1
ProcVersionSignature: Ubuntu 3.8.0-29.42~precise1-generic 3.8.13.5
Uname: Linux 3.8.0-29-generic i686
ApportVersion: 2.0.1-0ubuntu17.4
Architecture: i386
Date: Mon Aug 26 11:35:38 2013
InstallationMedia: Ubuntu 12.04.3 LTS "Precise Pangolin" - Release i386 (20130820.2)
MarkForUpload: True
ProcEnviron:
 LANGUAGE=en_US:en
 TERM=xterm
 PATH=(custom, no username)
 LANG=en_US.UTF-8
 SHELL=/bin/bash
SourcePackage: linux-lts-raring
UpgradeStatus: No upgrade log present (probably fresh install)

[Launchpad Janitor (janitor)]

Status changed to 'Confirmed' because the bug affects multiple users.

[penalvch (penalvch)]

Eugene San, could you please execute the following at a terminal:
apport-collect 1216875

[Launchpad Janitor (janitor)]

[Expired for linux-lts-raring (Ubuntu) because there has been no activity for 60 days.]