Replying to Loading problem with safari

Never had this before, but since now one month, whenever I go on NS after the login page (so once i'm on the homepage) it loads for 1 or 2 mins (with the grey bar) and during that time none of the buttons (forums, photos...etc) are clickable. I've reinstalled safari, no change so I thought I'd tell you about it. It only happens on safari, firefox is fine.

peace

ps: just as I clicked to post this thread I got the "you do not have permission to post to this forum". I get this very often too whenever I post a thread and less often but still a few times when I just post in a thread. What's happening?????