WordPress MU

I have created multiple blogs without any problem for example these ones:
http://reboltutorial.com/scala/
http://reboltutorial.com/php/
http://reboltutorial.com/java/

But sometimes on very rare occasion, the new blog doesn't work
http://reboltutorial.com/csharp/

Why and above how can I recover my csharp blog (I tried to delete and recreate it, it doesn't fix the problem)?

Thanks for help if you can.

Not sure what you mean ... the blog seems to be showing up when I follow your link.

Oh maybe it's my firefox browser or rather a search plugin that is messing with my blog then.

I just check: it does work on IE.

So no problem from Wordpress.