2IC,
I have lost more posts than I like to think about in all the different forums I post in. This is not a solution but I am in the habit of always highlighting my entire post and hitting CTRL + C, then I hit the Preview Button, if that works, then I post it.
That way, if it fails to post, you can go back a page and my post should still be loaded in the Preview Screen, if that for some reason does not work, sometimes it does not, I still have it copied from hitting CTRL + C so I can go to the post window and hit CRTL + V and paste it, and try to post it again.
Trust me, in the long run, your keyboard will last longer, since you will not be hitting it with both fists as often.
Take Care,
Richard