Edit: After half day, my wife’s Mac started having the same problem. I have then applied the solution that I found in the Apple
Hands On: Apple's Podcast iOS App –
In iOS 6 beta 1 & beta 2 we were unable to search podcasts and also download podcasts but now Apple has just released a dedicated app for podcasts and you can download it now. The app shows off Apple’s attention to detail with the brand new player which is in the style of a tape deck.
A lot of podcasters have had different thoughts on this app and the way Apple has split podcasts from the iTunes app. This could be a good thing but could also mean that podcasts will become like iTunes U and iBooks and by that I mean only a certain person will use the apps.
A thing which would really help podcasts is if the new podcasts app already comes installed in iOS 6. If this does not happen this could have a big affect on the size of podcasters audience and will make it even harder to grow.
Download It Here : http://itunes.apple.com/gb/app/podcasts/id525463029?mt=8