We started seeing alerts come in this afternoon for engine crashes. Looking at the log, I see this update...
Microsoft Forefront Client Security signature version has been updated.
Current Signature Version: 1.157.1352.0
Previous Signature Version: 1.157.1326.0
Update Source: User
Signature Type: AntiSpyware
Update Type: Delta
User: NT AUTHORITY\SYSTEM
Current Engine Version: 1.1.9800.0
Previous Engine Version: 1.1.9800.0
followed by this error message...
Microsoft Forefront Client Security engine has been terminated due to an unexpected error.
Failure Type: Crash
Exception code: 0xc0000005
Resource: file:\Device\HarddiskVolume1\Windows\System32\WinSCard.dll
So far, I've got alerts for 8 servers and increasing.