Hi
Wonderful product - well thought out.
I'm having an issue with Asynchronous Check in IE8. In FireFox it works fine, every field is verified as I click out of the current checkbox into the next. Clicking Register than redirects to the proper URL. (see Image -> FF-demo-sakic-POSTclick-Register-button.JPG)

Behaviour is much different in IE8, I've used your demo URL to show this behaviour. As I go through the fields, two are left unchecked.  (see IE8-demo-sakic-PREclick-Register-button.JPG).

When I click the Register button the 1st time the two unchecked fields are then checked and marked. (see IE8-demo-sakic-POSTclick-Register-button.JPG)

On the 2nd press of Register than the page re-directs to your demo page.

I really prefer the FireFox behaviour, any ideas?

It has nothing to do with IE8 vs FF thing, it has to do with the browser remembering your fields and auto-filling them preventing the inline check.

If you check configuration you will notice a setting called "Autocomplete off". Set it to Yes and it will prevent browser to fill the fields automatically and that should fix the issue.

Thank you for your prompt answer.
However I'm a little confused 
Why would changing that setting on my site affect the way your site http://joomla15.sakic.net/user/register/ behaves in my IE8 browser.
The screen shots I took were from filling the forms on YOUR demo site
and of course I'm assuming your using your own component for that demo page.

It will change the way it behaves on YOUR site!

I haven't turned it on on my demo site. Some sites may prefer auto-fill over need to click twice for submission.

I understand now and by following your instructions, it works PERFECTLY!
Thanks again