Oh, I forgot. After the update, avast! tried (unsuccesfuly) to update VDF and presented a message that my licence is about to expire - licence is good 'till 1/1/2007, system date & time is correct.
Igor, have you noticed this line on my log?
14:32:59 min/gen Return code: 0x2000001A [The license key for this product is invalid or expired.
License is valid until: Thursday, January 01, 1970
Current date: Friday, April 28, 2006]
1 9 7 0