The sections of the l10n dashboard show not translated articles, need-update articles, etc. If there are more than 10 articles in one of the list (except for the most visited articles list with its 20 entries) then that will not be indicated visibly. The link at the bottom of each list ("All untranslated articles...", etc.) exists even if there are fewer than 11 articles. So this isn't an indicator. Suggestion: If there are more than 10 articles in a list, insert a string like "And more..." or whatever between the list and the link ("All untranslated articles..."). So you can see at a glance if there are more articles that need your attention.