IgorMina, I suspect that the current issue is that while you've turned off email notification for any new topic that you reply in, the old notification subscriptions are still active.

What you do is this:

On your user options, go to Control Panel - Subscribed Threads, and click on List Subscriptions.

Here you'll be able to see all the threads you're subscribed to, and the notification type for them. What you want is to have them all listed as "None", as in no notification whatsoever.

Now, mark all the subscriptions in each page (there's a handy tick box for that at the top), then select "Update Subscription Type - No Email Notification" in the action selection box below.

Click on the "GO" button.

Repeat until all subscriptions have been updated.