When using the back button on Safari, I often get a window that pops up and says: "Are you sure you want to send a form again?". This is really annoying and I don't get this on Camino. Any ideas?
This'll happen if your using a search feature or something similar. It basically is going to re-send your request. For example if you did a search for 'Tiger' and at the results page you click 'Stop' and then click reload it'll ask you if you really want to load the page again. If I remember correctly this was once a precaution for forms other things that you shouldn't really click twice, like submiting a thread in a forum.
At least that's what I remember it being...correct me if I'm wrong please
Yeah, most of the time it's fine to just let it go, but if it's something like an online purchase, or, as has been mentioned, a forum post, then it's probably better to NOT do it (instead you can hold down the back button, and go to the one before it, or something similar).. As far as I can tell, there's no way to turn this feature off in Safari.