I have Avast (free) version 6.0.1289 and OS is 32-bit Vista Home (SP2). With AvastUI I created custom scan which checks computer operating memory and auto-start programs (all users) and
when I run custom scan it says win32-cycbot-ki found. I checked my computer with
Avast Full System scan => clean
Avast boot time scan (all drives) => clean
Avast quick scan => clean
Microsoft Security Scanner => clean
F-Secure online scanner 4.2 => clean
When running custom scan (operating memory & auto-start programs) I had notepad and firefox running (screenshot), If I close all programs then custom scan says avastui.exe and svchost.exe processes are inflated by win32:cycbot-ki.
I tried Avast 6.0.1289 in another computer with Vista Home 32-bit (SP2) and custom scan (operating memory & auto-start programs) and result is that avastui.exe, svchost.exe and scheduler.exe are infected by win32:cycbot-ki. All scans made with latest definition versions (23.9.2011 and 24.9.2011)
When I adjusted the sensitivity of custom scan from normal to quick, then no alerts, all clean
Screenshot of scan results
http://postimage.org/image/13yaxpz2c/