After installing 4.1.150349.920 "svchost.exe" in My Blocked Files

Comodo Internet Security - CIS AntiVirus Help - CIS
#1

After I installed version 4.1.150349.920 on Vista SP2 (I know, I know -badbadbad) I was unable to boot in normal mode.

Hours later I found out that C:\Windows\system32\svchost.exe was in the ‘My Blocked Files’ area of Defense+ of our beloved Internet Security Premium.

I deleted it from there and since then Vista is booting normal again.
Quite sure that I had never put svchost.exe there.

Please make sure that this will not happen again in the next update.

#2

Check your computer with GMER, any rootkits?
Check the log files of D+ and when it was blocked, please.