403 error with internet explorer

For some reason my forms will not submit in internet explorer, and keeps giving me a 403 error page You may not be able to visit this page because of:
1.an out-of-date bookmark/favourite
2.a search engine that has an out-of-date listing for this site
3.a mistyped address
4.you have no access to this page
5.The requested resource was not found.
6.An error has occurred while processing your request.

Please try one of the following pages:


•Home Page


But they work fine in Firefox and Chrome. Also it only happens when using the plugin tags on my article page, but if I use a direct link to the form itself, it will submit fine. So my guess is internet explorer isn't liking the {chronocontact} tags for some reason?

here is an example:

http://www.lustreproducts.com/signage/217-fp2-66-07

Hi darthlafollette,

I just submitted from here using IE9 in IE9, IE8 and IE7 mode with no problems.

Bob

Really? that's strange. What could be causing it on my end to not submit properly through IE then? I tried clearing the cache numerous times in Joomla. hmmm. Well it's good to know that other people can use it at least( I hope).

I completely cleared the cache in IE and Joomla, and now I get:

You are not allowed to access this URL

Hi darthlafollette,

Still looks good here. What URL are you seeing when you get the error message?

Bob

The funny thing now is, I have had other people outside my building use the form in IE and it works. So I guess it must be something with the network in my building causing the problem. Also, older forms I made months ago work fine in IE on my computer, but not the most recent ones I made, which have the same basic code. Very weird.