I don't think that is normal because it is not happening for me everything is normal. I don't really know where your problem comes from but maybe it's just your internet connection that blocks when it connects to the apple's server or something like that.
I done a little bit of testing since I posted. The long delay is definitely caused by my personalized view. If I remove all but the basic view the delay is very short. If I add in the object that shows the 30 most recent threads I've posted to the delay increases to a couple of seconds. Adding back an object will increase the time. Reverting to my 4 object view restores the 40 second delay.
I find that I don't use the three objects that are causing the delay so I removed them.