What Is The Highest CPC Rate You've Earned With Adsense

[wiztech]

I have been an Adsense partner for the past 1½ years. Since I have been monitoring my CPC (the amount I get per click) with Adsense. On one of my site when I first started I only get about 0.01-0.05 per click but after some time I started getting around $0.30, $0.45 at times, the highest I have ever seen so far was $1.90.
From my search on the web I found out that some site owners claimed they've earned more than $25 per click at some point.
I'll like to hear from you guys the highest CPC you've earned with Adsense.
Right now, am beginning to think maybe Adsense isn't a gold mine as i thought it to be and if there are other ad network that has a higher CPC rate, please do mention them.

@solomon @admin @wizzy @sammy

[solomon]

My highest CPC on one account I used to have was $1, I lost the account though , was guilty of encouraging clicks

Currently my Adsense isn't doing well, CPC has been so low hardly gets 0.25, Nigerian advertisers a stingy abeg

[IPman]

My highest is 1.72.
I don't know wat is happening with Adsense, I ave been experiencing very low CPC since the beginning of this year. At times i get nothing for clicks.
Anyone also experiencing this? And whats the way out pls?