Okay. Reproduced problem —

(1) I downgraded from 32436 to 30664 by reinstalling… then rebooted my MacBook Pro 5,5 running Lion 10.7.1
After reboot, upgraded to 32436. After upgrade, open avast from “Open avast!” menu item. Status window shows:

 NOT SECURED
 Cannot detect state of one or more shields.

 File Shield  ✓  ON
 Mail Shield  !  Cannot detect
 Web Shield  !  Cannot detect

Update proceeded without any problem or delay.

(2) Would be glad to send you the system.log and kernel.log, but I can’t attach them as they are larger than 200 kb each.

(3) Also, there are 5 /tmp/script.log- files … I have attached the first 4 to this post, let me know and I would be glad to send the 5th file along with the system.log and kernel.log files to you.