Forum Moderators: martinibuster
First you must wait for the total day's numbers to be finalized (following day) before doing your check.
Double check that none of your channels are duplicates. In other words do you have one tracking URL and one channel for the same page. If so both totals will show in the aggregate report.
Are you tracking by URL with www. in front. If so it will not track the clicks that came to mysite.com without the www. I had one of our sites set up this way and it made quite a bit of difference at the end of the month.
You can even see different updated stats when you have two browser windows (or two different browsers) logged in and you hit reload at the same time.
This reason, as well as the ones Tropical Island outlined, are why AdSense says wait 24 hours for the stats to be finalized. It has always been this way.