Clicks lags impressions, Adsense report?

[louai]

I get the impression that maybe the clicks lag the page impression as they are recorded in adsense's report. Once the click is accepted it is placed in the NEXT day's report if it was delayed by as much as 24 hours. Is this assumption correct?

This is purely speculation on my part based on what the previous thread hinted on, I was wondering if someone else could shed some light on this?

[ken_b]

They don't necessarily all update at the same time. It can take 24 - 48 hours for a days stats to settle.

Todays clicks, impressions, etc. will eventually appear in todays stats.

They don't get shoved into the next days stats.

[funandgames]

I am not sure if it is all just lag. CTR has spiraled down for about three weeks straight. Too long to be just lag. Anyone noticing a downward trend in CTR lately?