ITunes radio 10.5.3 (3) stopped working

Here in The Netherlands I have the same problem with OS iLion and OS Leopard iTunes 10.5.3. This problem occured indead February 24, 2012.

After I tried to solve with all suggestions made here I am getting a little hopeless. It seams an overall Apple problem, or not?

What you can do is this: every once in a while one or some of the music genres will pop open, when that is the case, make a new playlist and copy all radio stations in that playlist. This way you can collect as much stations as possible, and because there is no longer any need for the genre list to appear which most often does not work, you can click on the station in your playlist and listen to the station you want while the genre itself in iTunes' Radio does not show up. It might take a few days before you have collected all the groups that you want to listen too.

The process described by Appeltjehehe worked for me. Yesterday the two genres I care most about opened up (who knows for how long) and I seized the moment to create a couple of playlists and drag several stations into them. I never would have thought of this on my own, but a couple of previous posts had advised doing this, so thanks to any and all who gave that info. Today, all the stations I dragged into playlists are accessible. The catch is you have to hit up your genre at just the right time. I kept trying over the course of a few days and eventually nailed it.

I found the solution: clear the cache in preferences/advanced of iTunes!

Unfortunately, that didn't work here.

Didn't work for me either.

Well i have had enought of this so i just found a great solution to this problem-----> Radium from Appstore

And it was well worth it.

I managed to fix mine.

Was having the same problem here today January 21, 2013 using 2009 iMc with OSX 10.8.2 and iTunes 11.0.1

I read this guys post and it seemed to fix it:

http://the.tygern8r.com/2012/156/itunes-radio-contacting-tuning-service

I didn't delete my ISP's DNS address just added the one he used. I also turned of my wifi and just used the ethernet on my iMac (I have wifi turned on to use remote on my iphone).

Then I restarted itunes. Clicked on the twisty triangle thing under a genre of music and very quickly the message popped up "itunes contacting tuning service refreshing category list" but so fast I couldn't have read it and then all the stations appeared.

I am running on Mac OSX 10.8.2 and iTunes 11.0.2. I see that the "Radio" feature has been moved to a different spot in the iTunes user interface. It used to show up in the side bar under the Library. It is now bundled in with the Music choices. That is, select Music and then look at the top bar on the music window to the right. My music top bar reads: "Songs Albums Artists Genres Videos Radio Match".

The irony is iTunes help still shows the internet Radio selection to be in the side bar under the Library heading.

My playlist doesn't work but I went directly to the radio section of music and the stations worked there.

PS: I hate the latest layout. I have to figure out how to add the radio station to my playlist every time. Its not obvious. Apple has taken minimalism to far. Its not clear anymore how to do things.