Some adsense ads not showing on autoblog for 3 days now

I have two autoblogs
I changed the robots.txt file and only 1 ad is diaplayed out of 4 (3 ad units and 1 link unit)

I am currently using Platinum SEO and Easy adsenser as plugins for this.
the thing is that they were showing before and now nothing is being displayed

this site has not been indexed or anything yet but two sites created at the same time, same template etc, same theme

one has NO problem showing ads and the other is showing them randomly?
WTH is up with that
anyone have any answers to help a newbie out

do not wanna promote my site until its ready