I had my first BSOD with Vista today. I'm not sure if it happened during a virus scan or right after when you go to see results because I was away from the computer for a few hours while it was running. Judging by the time stamp it happened about 15 minutes before I returned with would put it firmly in the report section of the virus scan. I got the error notice when I returned and I tried finding support documents but I'm a little lost. I tried opening up the minidump file in Windows debugging tool and I downloaded the 64-bit symbol package, but I'm not sure which symbol file to use as there are many contained within. Here's what I got:

Product
Windows

Problem
Shut down unexpectedly

Date
2/26/2007 8:44 PM

Status
Report Sent

Problem signature
Problem Event Name: BlueScreen
OS Version: 6.0.6000.2.0.0.256.1
Locale ID: 1033

Files that help describe the problem (some files may no longer be available)
Mini022607-01.dmp
sysdata.xml
Version.txt

Extra information about the problem
BCCode: 24
BCP1: 00000000001904AB
BCP2: FFFFF9801F8AACB8
BCP3: FFFFF9801F8AA690
BCP4: FFFFF980009207AA
OS Version: 6_0_6000
Service Pack: 0_0
Product: 256_1
Server information: 7530efd7-8b2b-4108-be43-0be4346c9eb5

Here's a link to the STOP error code: http://aumha.org/win5/kbestop.php#0x24

When using the debugging tools, you don't download the symbols - you point the debugger at the symbols online.

Once you point the debugger at the symbol files, then you open the crash dump (Mini022607-01.dmp) with the debugger. It may give you more information about the error message (such as the file that the error occurred in and the memory space that was occupied when and where the error occurred.

FWIW - this error indicates a file system problem (see the link for more details). Also, this error can be caused by a virus - either by it attempting to deny access to the AV scanner, or by corrupting the file system itself.