EVent ID 90 After starting Vista

Log Name: Antivirus
Source: avast!
Date: 6/1/2006 7:31:20 AM
Event ID: 90
Task Category: Client
Level: Error
Keywords: Classic
User: N/A
Computer: DJEXTREME-PC
Description:
AAVM - scanning error: FATAL: GetQueuedCompletionStatus failed!!!, 000002DF.

How would you fix this?
other than that Avast! works great in Windows Vista Beta 2

Are you using the latest version of avast? (4.7.844)

Is this Vista 32-bit or 64-bit?

I am using the 32bit version of Vista Beta 2 build 5384 and I am running the most recent version of Avast.

Has this happened only once, or the log is full of it?

Thanks
Vlk