Random 'touch glitches" on x220 with Windows 8 Pro

Performed a clean install of Win8 on x220 Tablet with brand new SSD (not an upgrade). The Start Menu GUI displays 'random touch glitches' (those highlights that appear when you actually touch the screen), which are invoking random apps. This is not happening on the desktop mode.
Ran the Lenovo System Updater which provided a number of drivers but did not correct this issue.
Then I installed the latest Wacom Windows 8 driver for Tablet PC but still this has not corrected the appearance of these random touch glitches.
Anyone encounter this and find a fix? Much appreciated.
Solved!
Go to Solution.

Per early query, the 'random touch' glitches appear as random 'sonar blips', much like when you touch the new Win8 GUI (not the old Win7 desktop).
Thanks for the link to prior discussion. Ran the BIOS Updater, re-booted but random 'sonar' blips persist. Though the discussion link led someone to conclude it was hardware issue, I am not convinced since I am only getting these 'sonar' blips in the Win8 GUI. The desktop shows nothing (though when you actually touch the desktop screen no 'sonar' graphic appears, and my desktop shortcuts are not randomly opening.
Again, this is appearing only in the Win8 GUI so I'm guessing that's where the problem lies.

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CrystalDiskMark 3.0.2 (C) 2007-2013 hiyohiyo
                           Crystal Dew World : http://crystalmark.info/
* MB/s = 1,000,000 byte/s [SATA/300 = 300,000,000 byte/s]
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Random Write 4KB (QD=32) :    54.319 MB/s [ 13261.4 IOPS]
Test : 1000 MB [C: 5.3% (24.6/465.8 GB)] (x5)
Date : 2013/01/14 13:23:26
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I had a real problem with wireless performance on multiple ThinkPads with Win7 until I realized there is a new (or maybe changed implementation) power setting in Win7 which was affecting it.
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The large print: please read the Community Participation Rules before posting. Include as much information as possible: model, machine type, operating system, and a descriptive subject line. Do not include personal information: serial number, telephone number, email address, etc. The fine print: I do not work for, nor do I speak for Lenovo. Unsolicited private messages will be ignored. ... GeezBlog
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Random 'touch glitches" on x220 with Windows 8 Pro

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