Shutdown during full scan by Kaspersky

[Rebecca2000]

My computer runs XP Pro Sp2 fully patched, Kasersky Internet Security
6.0 with frequent updates.
P IV Laptop, 1 G Ram, 60 G HD.

Windows firewall of Security Center is off.

Things run just normal, keeping alive for more than a week. Strange
thing only occurs when I run full scan.

After around 10 - 30 minutes, randomly, scanning ten of thousands of
files, the computer shut down.

So I am not sure whether the computer had finished the scanning.

I thought there might be some settings in Kaspersky to make the
computer shutdown after scanning, apparently there is not such
setting.

I just wonder whether this is a bug of Kaspersky, which has conflict
with some systems, causing unexpected shutdown, or, there might be
such virus that hide from Kaspersky real time scan, and beat the full
scan.

Can you give some things?

Thanks

 

[Opus]

You might try their online scan to see if you have some malware that is
affecting the installed A/V application. Here is the link:

http://www.kaspersky.com/virusscanner

Kind regards,
Opus