BSOD due to Avast file(???)

Avast Free Antivirus / Premium Security
1

I experienced several BSOD in the past few days and was hoping for insight. One of the files appears to be an Avast file and was wondering if this is a known conflict or other(virus)???
The following are the specs on computer and minidump info for corresponding days.

Windows Vista Business
2007 Microsoft Corp
Service Pack 2
Intel Core 2 Duo
HP Pavilion
I use the free version of Avast and Windows firewall.

Minidump files
April 3
**first crash: Probably caused by : aswFsBlk.SYS ( aswFsBlk+14b5 )
second crash: Probably caused by : ntoskrnl.exe ( nt+b0def )

April 5
first crash: Probably caused by : ntoskrnl.exe ( nt+bbebb )
second crash: Probably caused by : afd.sys ( afd+18d48 )

2

Please, go to folder \windows\minidump and send the newest (recent) .mdmp files for analysis.
There is also C:\Windows\Memory.dmp file.
Better if you can compress (zip), rename it with an unique name, them and add some information about the BSOD and the link for this thread. :wink:
Upload it to this anonymous ftp server: ftp://ftp.avast.com/incoming/