I dontk now if anyone else has had this problem but if there is any code in your profile, it needs to be gone because somehow it conflicts w/ the update. My posts didn't show up because i had a AIM code in my profile. I had completely forgotten about it because my modules are no longer up.

So if your xanga isn't working you might want to try removing the code in your profile. (as a reminder i think this will only affect code in your posts and in the webstats section). The code in the header comes before any code in the profile.