It works in firefox? How about logging out of the site, clearing your cookies AND browser history and then trying to login.

Very strange... closed browser, cleared cache and cookies, opened back up and still can't get in...

OK Pm me a admin account and I will see if I can replicate the issue. Make sure you removed all the code from the .htaccess.

Sent

When did you notice this start happening? What browser do you use by default?

I was able to replicate the issue, both logging into the ACP and the site it's self, but then I cleared my cookies for your site, and was able to log in successfully.

After I did the second part of the htaccess, I use FF by default :

# BEGIN Caching
<ifModule mod_headers.c>
<filesMatch "\\.(ico|pdf|flv|jpg|jpeg|png|gif|swf)$">
Header set Cache-Control "max-age=2592000, public"
</filesMatch>
<filesMatch "\\.(css)$">
Header set Cache-Control "max-age=604800, public"
</filesMatch>
<filesMatch "\\.(js)$">
Header set Cache-Control "max-age=216000, private"
</filesMatch>
<filesMatch "\\.(xml|txt)$">
Header set Cache-Control "max-age=216000, public, must-revalidate"
</filesMatch>
<filesMatch "\\.(html|htm|php)$">
Header set Cache-Control "max-age=1, private, must-revalidate"
</filesMatch>
</ifModule>
# END Caching

OK, so your htacess is completely empty now?

Is there a specific reason you have installed a SSL, and are using https instead of http for the site?

Your MGC chatbox is not working, I would disable that.

If you're trying to use htaccess to cache static content, it's not working.

WebPageTest

I see you're also ineptly trying to use cloudflare as a CDN, this overrides any caching you try to do via htaccess.

Not sure I understand what you mean by cloudflare? Can you use htaccess to cache static content? Am I doing it wrong? Thanks.

What about this.