Problem with Multiple Google Adsense blocks

I wasn’t sure where to put this post so I decided to place it in the this topic. Hopefully I’ve come to the right place.

I’m having a problem with my wordpress blog and multiple Google Adsense blocks (https://www.tivoblog.com). Recently I decided to add multiple adsense blocks to my site. I have one on the right, and one after the second post. The problem I am experiencing is that some times the ads do not appear unless I perform a <Shift> Refresh. Once I perform the refresh, everything appears to be fine. Anybody have any suggestions? Have you experienced this before?