With "entire system" selected the scan finishes rather quickly with the following report.txt:
* avast! Report
* This file is generated automatically
*
* Started on Fri 10 Feb 2006 09:11:26 PM MST
* VPS: 606-4, 02/10/2006
*
Infected files: 0
Total files: 111
Total folders: 19
Total size: 8.8 MiB
*
* Stopped on Fri 10 Feb 2006 09:11:27 PM MST
* Runtime was 00:00:01