Im a little confused, yesterday I logged into my adwords account and it showed 1 click and a cost, when I viewed the ad in more detail ie looking at the keywords to see which key word was used to access my site it showed all keywords having 0 clicks yet shows a click and cost for this click at the bottom.

Today I checked again and this time it shows 2 clicks and costing for these clicks but when I look at the keywords they all show 0 clicks

This is what I mean (happened again today) down the bottom it shows a click and Im paying for that click but none of the keywords show a click so where does it come from. Does this happen to other people should I ignore it?