... very normal.
The CVJ need to be able to move the axles in and out in order to compensate for the movement of the suspension.
You will still have to pound out the axles after removing the axle nuts.
Here are my DIY instructions:
http://www.pedrosgarage.com/Site_3/Replace_the_CVJ_Boots_%26_Half_Axles.html
Happy Boxstering,
Pedro