@theymos: can you confirm my edits in your quote (in bold) make it correct?
Mini bumps
If you haven't posted in a topic bumped a topic by posting in it in the last 7 days, posting in it adds 1% of your base bump power to the topic's bump score. Deleted posts count against the 7-day limit, but not the topic's bump score.
Your post bumped
this thread on October 3. So the post you made on September 30 shouldn't have bumped the thread. But there is no post by you in September 24-30.
Have you deleted any posts made in September 24-30?