Tecra M5: Applications hang with 50 percentage CPU usage

I have recently received a Tecra M5 which is great except now and again processes hang consuming 50 percentage cpu.
I have installed the update to the fingerprint reader and am starting to suspect it is an issue with the NVIDIA graphics driver.
When the process hangs, if I look at the process using process explorer (sysinternals) I see a low memory event being logged. The laptop has 2Gb of memory and only ~1Gb is being used.
What can be done to find out what is causing this hang?

i know many would be shocked to hear what i'm about to say: "most virus checkers r more trouble than they r worth". Not only do they slow down ur system, u can never "catch up" without the constant update (not to mention u have to trust them as well). all the computers i have re-built i just install a good FIREWALL without any virus checkers: turn off any unnecessary services; allow only wanted applications blocking everything else; n advise users not to click on anything they r not expecting. So far i have not heard any of theirs get infected.
Good Firewalls r rarely free nowadays however (i hear that Zonealarms is good enough). u can download an old Sygate version 5.5.2577 at http://www.oldversion.com/program.php?n=sygate (some users have problems with version 5.6). For non techies, it might b worth paying for a good FIREWALL that includes customer support service.
Lisa
Pls let us know if ur change solves ur problem.

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This problem doesn't appear always. It appears sometimes.
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Tecra M5: Applications hang with 50 percentage CPU usage

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