Any ideas?

Could it be because I put my analytics tracking code in the footer of the page rather than in headinclude?

I can't get this working either - my tracking code is also in the footer.

I have tried a few different combinations of paths in the settings and the plugin but still no luck.

How quickly are conversion goals updated in analytics? I give it a few days before making another change so it's a slow process to troubleshoot.

Nick0r and aus_dave,
Try putting it in the headinclude. In theory it should work from anywhere. The head include is where Google originally said to put it, just before the </head> tag. Now they say put it just before the </body> tag.
Nick0r, on your site, you have a ton of javascripts that show up when I look at the source on your first register. It is also possible that something is conflicting. Perhaps putting it in the head include will get it to run before something else that may conflict. The text itself looked correct, so I didn't see any typos. Also, can you list the exact URLs you gave to Google Analytics? For instance, the first one should be something to do with signup.html instead of member added.
aus_dave, yes, it can take a few days for google to start showing statistics, which does make it very slow to troubleshoot. If you want to post what's in your google setup, I'd be happy to take a look at it for you.

Did you do the "screenshots" with your camera and then scan them or something?

No, I did them using a print screen while I had a bad video card, which put the lines in.

I updated the screen shots. Those should look a bit better.

Yes, good job :)

Thanks for the advice Elleth. I moved the tracking code inside the headinclude and it worked fine. Not sure why this would be so - in theory it should work anywhere on the page.

Now I need to work out what all these goal conversion reports mean!

The problem with putting it in headinclude is that there are tons of custom pages of my sites that use custom mega tags etc and i avoid using $headinclude in those ones. It'll be too time consuming to go through and add them all manually.

In terms of the javascript, I haven't added anything there at all, I haven't even customised registration.

Nick0r,
When I looked at the source that displays on your registration page, there was a lot of extra code, and I suspect some of that code is conflicting with Google. Try going to your registration page and viewing the source, then going to another bulletin site and viewing the source, and you will see what I mean.
If the headinclude doesn't work for you, then perhaps putting it in the header will work?