ooowwwhhhh....no, no.. no..
Using K-Meleon: Mozilla/5.0 (Windows; U; Windows NT 5.1; en-US; rv:188.8.131.52) Gecko/20090331 K-Meleon/1.5.3
The problem (for me) is my code is so deeply nested it's a nightmare to debug on such an obscure issue with no visible errors.
K-Meleon came into my build process at a late point as I'd already stepped through to completion with IE6, IE7 and IE8.
This works on mobile phones and browsers and takes the word unobtrusive to a whole new level.
works on fall back as follows: XSLT->AJAX->ECMAScript->XHTML/XSL/XHTML-MP/WML
One day I may construct an isolated model which can be used as a test.