Failure to run "Full System Scan"

Norton Security | Norton Internet Security
1

I have NIS 2011, Version 18.6.0.29; my OS is Windows 7, 64-bit; I have no betas or new applications.

 

Today after running a Norton Update, I clicked on “Full System Scan” – and nothing happened.  I closed Internet Explorer, and tried running it that way – again, nothing happened when I clicked on “Full System Scan”

 

I rebooted, and on shutting down I received the following message:

 

ccSvchste.exe – Application Error

 

The instruction at 0x00000001 referenced memory at 0x00000001.

The memory could not be written.

Click OK to terminate the program.

 

I clicked OK and successfully rebooted.

After doing so, I am able to run a Full System Scan.

 

My questions:

[1] Why did this occur?

[2] For the few minutes that I was still online and could not run a Full System Scan, was my security protection compromised in real time?

[3] Unrelated, but why is there such a huge variation in the number of files scanned on a Full System Scan?  Sometimes it’ll be ~ 200k, other times ~ 400k and sometimes ~ 800k.  I know it has something to do with updating and if it’s recently looked at some sections, but it seems like a huge discrepancy in numbers.

 

TIA

2

I have NIS 2011, Version 18.6.0.29; my OS is Windows 7, 64-bit; I have no betas or new applications.

 

Today after running a Norton Update, I clicked on “Full System Scan” – and nothing happened.  I closed Internet Explorer, and tried running it that way – again, nothing happened when I clicked on “Full System Scan”

 

I rebooted, and on shutting down I received the following message:

 

ccSvchste.exe – Application Error

 

The instruction at 0x00000001 referenced memory at 0x00000001.

The memory could not be written.

Click OK to terminate the program.

 

I clicked OK and successfully rebooted.

After doing so, I am able to run a Full System Scan.

 

My questions:

[1] Why did this occur?

[2] For the few minutes that I was still online and could not run a Full System Scan, was my security protection compromised in real time?

[3] Unrelated, but why is there such a huge variation in the number of files scanned on a Full System Scan?  Sometimes it’ll be ~ 200k, other times ~ 400k and sometimes ~ 800k.  I know it has something to do with updating and if it’s recently looked at some sections, but it seems like a huge discrepancy in numbers.

 

TIA