Hi,
Yesterday I was hit by BSOD "0x00000050: PAGE_FAULT_IN_NONPAGED_AREA aswsnx.sys". It has happened just after Avast told, that upgrade was successful (not sure if it was virus definition or program update - I usually close these messages without reading ;-) )
It happened always after laptop reset again and again, usually couple of seconds after logging into my account.
I uninstalled avast in Safe Mode and then laptop works stable. I installed avast again (latest version - 7.0.1456) and after laptop reset I got BSOD again. I uninstalled it again in safe mode, then installed 7.0.1451, then got BSOD after restart again. I uninstalled it again in safe mode, run aswclear.exe then installed 7.0.1426, and now laptop works stable.
Avast: free (avast_free_antivirus_setup.exe)
Version: not sure, because I uninstalled it, but I found in c:\Program Files\avast\setup\history.ini: "version=7.0.1456"
then I installed version 7.0.1456 and got BSOD again
OS: Windows XP SP3 compilation 2600.xpsp_sp3_gdr.120504-1619
Other security related software installed: Windows Firewall
I got some minidumps and analyze them using WinDbg, in most of them there are identical sections:
STACK_TEXT:
a22758f0 a2bc7616 e3253008 e3254238 fffff9e5 nt!memmove+0x33
WARNING: Stack unwind information not available. Following frames may be wrong.
a2275954 a2bd1743 8291e390 e2ad7820 a2275b00 aswSnx+0x23616
a2275adc a2bd29fb 8291e390 00000f1c a2275b00 aswSnx+0x2d743
a2275b40 805d04d5 00000f08 00000f1c 00000001 aswSnx+0x2e9fb
a2275c84 805d1134 0081f844 001f03ff 0081f818 nt!PspCreateThread+0x3b1
a2275cfc a2bbb2c3 0081f844 001f03ff 0081f818 nt!NtCreateThread+0xfc
a2275d3c 8054168c 0081f844 001f03ff 0081f818 aswSnx+0x172c3
a2275d3c 7c90e514 0081f844 001f03ff 0081f818 nt!KiFastCallEntry+0xfc
0081f868 00000000 00000000 00000000 00000000 0x7c90e514
or
STACK_TEXT:
WARNING: Stack unwind information not available. Following frames may be wrong.
a2082954 a2bd1743 82f1a388 e3280f08 a2082b00 aswSnx+0x235da
a2082adc a2bd29fb 82f1a388 00000d1c a2082b00 aswSnx+0x2d743
a2082b40 805d04d5 00000d0c 00000d1c 00000001 aswSnx+0x2e9fb
a2082c84 805d1134 0081f844 001f03ff 0081f818 nt!PspCreateThread+0x3b1
a2082cfc a2bbb2c3 0081f844 001f03ff 0081f818 nt!NtCreateThread+0xfc
a2082d3c 8054168c 0081f844 001f03ff 0081f818 aswSnx+0x172c3
a2082d3c 7c90e514 0081f844 001f03ff 0081f818 nt!KiFastCallEntry+0xfc
0081f868 00000000 00000000 00000000 00000000 0x7c90e514
I could upload somewhere all minidumps and results of WinDbg. I tried to attach them to this post, but forum does not allowed that kind of attachment.