what was fixed in 3.9 (508) and 3.9 (509)?

Comodo Internet Security - CIS News / Announcements / Feedback - CIS
1

Since 3.9 came out there were 2 updates, (508) and (509). What was fixed in those updates?

2

Read here.

https://forums.comodo.com/feedbackcommentsannouncementsnews_cis/comodo_internet_security_3995478509_released-t39202.0.html

3

At your service: Edit: 509 addresses system freezes and BSODs some users may be experiencing. You do not need to reinstall anything. Automatic update will do this simple update for you.