Are other people able to access using your login from their machines? In other words, does the problem appear to be just on your machine? If so, perhaps you could uninstall, and reinstall desktop....
Is your machine just like everyone elses or is it a weaker machine? Like I said before, I've gotten the error when memory was running low, but, I think their error handling is a little quirky sometimes, in that they don't give you the best descriptions all the time, so it might not have anything to do with memory.