Time to start over.
http://www.cigarasylum.com/vb/showthread.php?t=620
http://www.cigarasylum.com/vb/showthread.php?t=619
Take out your smokes and store them temporarily in ziplock bags or tupperware.
When your humidor reaches 65-70% take out the water and let it sit for 24hours. If it stays stable at 65-70% you are good to go. If it drops down to 50% you need to check for leaks. Open the humidor a few inches and drop the lid, you should hear a whooshing sound as it closes. If it slams down, you have a leak.
Place a flashlight inside and look around the edges for light escaping. Add some painters masking tape in small strips where you see light. If you have a glass top you can close a dollar bill around the edges, if there is a spot where it slips out easily tape as needed.