Use Google Chrome, it will save your typed text. You will only lose the text if you have the bad luck to submit a post during the daily maintenance, which is more or less around this time. Otherwise, if you are logged you should never be kicked out.
Which brings me to this question: Does anyone gets logged out of the forum while on their computer? Personally, I don't. Once I'm logged, I stay logged forever. This might be a style bug, so please let us know.