Adsense displaying Wide skyscraper instead of Large Skyscraper.

I was using Large Skyscraper(300x600) for last 3 months. But all on a sudden instead of Large Skyscraper I see Wide Skyscraper(160x600).

I checked the adsense code and see the code is still for 300x600. This has happen to both my forum website and blog.

Does anyone else have this problem?

 

you have been hacked, there is no other explanation

 

No I am not hacked. I have 3 websites with 300x600 Large Skyscraper. all are now showing 16x600.

Also I checked page source and see the code is for 300x600.

 

can you show me an example if you dont mind?

 

My website is flgoo.com
This is really strange. I have this problem only when viewed with chrome on my desktop. For mozilla, no problem. Also my laps chrome is showing correctly. 2 days ago I had re-installed my desktop OS.

 

works fine to me

 

I think problem is with my Desktop chrome browser.