6 string references to 'format_interval' in Drupal 6

aggregator_admin_settings in modules/aggregator/aggregator.admin.inc

Form builder; Configure the aggregator system.

aggregator_form_feed in modules/aggregator/aggregator.admin.inc

Form builder; Generate a form to add/edit feed sources.

poll_form in modules/poll/poll.module

Implementation of hook_form().

statistics_access_logging_settings in modules/statistics/statistics.admin.inc

Form builder; Configure access logging.

system_performance_settings in modules/system/system.admin.inc

Form builder; Configure site performance settings.

user_block in modules/user/user.module

Implementation of hook_block().