Unchecked link count in report page never reduced to zero

Per cron run there may be ~120 links checked, but it depends on the links. The number of unchecked links should lower with every cron run... You can check the linkchecker table - oder by lastchecked column ad review the timestamp. Otherwise just wait or run cron in a batch loop as often as required to get the checks done asap. No idea how many links you have, but 1.000.000 links can take really long if you run cron only once per hour. You may like to run it every 5 minutes for some time or use the batch loop. Search the queue... Written about it long ago.

As said, run cron. Without access to your system you may not able to figure out the config problem on your server. For sure it is not linkchecker.

I've had this same problem. I'm using Drupal 6.22 and running the cron never changes anything. It seems that all the nodes in the `linkchecker_links` table are set to a status of 0, even though they're all published. It seems that this function is always returning false:

_linkchecker_link_check_status_filter

I got around this by adding a junk website into the "Do not check the link status of links containing these URLs" field.

Have you removed the example urls? If yes, add them back.

I've found a bug today that shows invalid counter on report page. Items that have been disabled for checking may always show as unchecked. I'm currently fixing this. Maybe it's related.

Note, this does not mean that any link has not been checked that should be checked, it's just a counter that shows wrong in UI. :-(