My CTR has shooted UPPP!

Keep it that way, as long as you or somebody else isn't doing something wrong to drive the click rate up then you should be fine

 

If they are legitimate clicks i would not worry about it, i typically on a monthly basis am getting double figures and some days does go above 20% and never caused me any problems with google.

 

30% CTR is unrealistically high & I think Google will already be looking into this.

 

High ctr on certain days is normal for me but alltime I average about 1.76%

 

I think 30% is too high . Check if you are getting invalid Clicks from the Same IP.

 

30% is indeed a too high ctr. mine never raised more than 10%. I would definitely write google and ask them to check your account.

 

Dont worry, and need not contact adsense team

In blogs, and properly placed ads in a page can make a ctr as high as 40% even.

If you want to make the ctr low, do some simple trick like,....... home page with a single ad unit and always say to (ur visitor) get inside your site where the actual content is. It will reduce ur ctr below 20%.

i.e just allow ur visitor to make one more page view, which will increase ur impression thus less ctr.