I believe it's what gimzo says. I don't use the App much, just for my notifications (which have been erratic the past month and I needed to manually turn off/turn on notifications in order to receive them) and to post a status, but this is a big problem.
The app in my touchpad takes a lot of time to load and then gets me to the account screen where my account is not present and I dont seem able to add it again.
The app in my Pre2 starts with communication error, if I dismiss it it then loads. I can still post in other people's statuses or upload pics (I think).
Very bad situation indeed