No Page Impressions but 2 clicks

[Adsman68]

Ive just noticed that 1 of my sites had 2 clicks on it but 0 page impressions and 0 page eCPM. It says that the the 2 clicks have earnt £0.41p.

Any reason for this that im missing ? Is this unusual or normal ? Can google be late updating the info ?

ps im pretty new to the adsense game : )

Thanks, Ads