I have been dealing with support since June 6th. Just heard back - get IE10 before U get support. Well Vista only supports up to IE9. Or try different browser. I agree with comments here, Twitter should support IE on XP, Vista & not just Windows8. My problem started before June. A couple of times I received a message that Twitter stopped due to long running script that I could stop the script & Twitter restarted & worked. This rarely occurs, I mostly just hang up forever. I almost always have to type & retype & retype before the characters are entered into the Tweet box.
This is terrible support & a way to run a social newtork product.