Where can I find older versions of CIS 6 ?

Comodo Internet Security - CIS Install / Setup / Configuration Help - CIS
#1

Where can I find older versions of CIS 6 ?
I´m troubleshooting problems with CPU-spikes, and want to test older versions to see if I can find which version those problems start with.

CIS upgrade completely wacked both of my systems
#2

http://www.filehorse.com/download-comodo-32/old-versions/

http://www.filehorse.com/download-comodo-64/old-versions/