Hello, i just tested our icetheme demo with IE9 and your site, but i could not replicate this issue on my demos, only your site. I would like to debug your javascript to see why it does not show the totals. I suspect that the problem is in json deserialization under IE9 which might be conflicting with some of your other scripts.
function op_get_SS_response...
i would like to try to comment these lines:
/*
if ((JSON != null) && (typeof JSON.decode != 'undefined'))
reta = JSON.decode(resp);
else
{
*/
reta = eval("(" + resp + ")");
/*
}
*/
Also you may try to set up a proper default country which should see the tax depending. Is your shop set up for a US use where the tax is calculated per selected state? If yes, then the problem might actually be in the function under IE9 which selects the state. Please test if you get this problem for logged in users with different shipping addresses (one eligible for tax and the other not). What is the status of the US checkbox at the price tab?
Please contact me on my email
info@rupostel.com and i can have a look on your site directly tommorow on friday.
Best Regards,
Stan