Update all seven WP-Stats plugins together. The downloads-section toggle and its row count lived in two shared, unprefixed WP-Stats rows. Each plugin keeps its own copy now and deletes the shared rows once it has read them, so whichever you update first takes them from the rest. A missing row means "show", so a block you had switched off may reappear — switch it off again under WP-Admin -> Downloads -> Settings, in the WP-Stats Options section of the Settings tab, where the row count also lives.