w32.kwbot.F.worm

With another AV I found the virus “w32.kwbot.F.worm” on my PC.
Now I have the Avast! Home Edition 4, with the version of virus database 0305-6 and it doesn’t find it.
Hy?

Can you please send the sample to support@asw.cz or divis@asw.cz ? We can’t say anything closer without seeing it first…

I’ve just send it.
Thanks