I had a page which uses codebehind Page_Load and (!IsPostBack) to setup all the controls on the page depending on what was being loaded. This worked fine, apart from when I refreshed the page (F5) in Firefox 3.5 – IE was okay.
Firefox seems to retain all the input selections – eventhough from the code behind I was ressetting them.
The only way I found to resolve this was to call a reset on the form (actually in my Master page) in the document ready function of JQuery which solves the problem.
$(“#<%= (form1.ClientID) %>”).reset();