I've been having real problems with the site recently. For weeks threads have kept coming up with a button saying they needed to be reloaded, which has been a pain. Since yesterday though the site is virtually unusable, it takes ages to load any thread, if I try to type it's like there's a massive delay on any typing - and then the thread reloads part-way through and I lose everything anyway.
I'm not using the app and I've tried it on Safari on my phone and iPad and Chrome and Lion on my laptop. It's driving me bonkers.