[citanul]

Quoting BruceZ from the probability forum:

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The recent software "upgrade" (and I use this term loosely) has introduced a number of problems which Chuck Weinstock is now attempting to fix. One very dangerous one occurs if you take too long to create your post. When you go to submit it, you may get a white screen stating that the post has "expired", and when you hit the back button, your post is gone. To avoid losing all of your hard work, be sure to copy your post to the clipboard (by highlighting its contents with ctl-a and then hitting ctl-c) or copy it to a file, before you click the button to submit it. Do this often as it is easy to accidentally hit the wrong key and lose everything.

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