Isn't svchost a system file though?
Very easily restored if infected?
I've seen a corrupt svchost file on my Win7 station, sell inflicted of course, and just rebooted and selected restore last good configuration, it restored the system files and svchost worked flawlessly again.
When I used XP and had a bad svchost file, bogged down due to malware or something, I just used a registry cleaner to clean it and it ran fine from then on.
What am I missing here? Is it that Windows has these files that COULD be infected or is it that they cannot be easily recovered when they are infected.
I don't see it as catastrophic if they provide a means of reverting it.