Sometimes visitors to your Joomla! site using Internet Explorer have trouble loading pages, getting an error saying:
'Internet Explorer cannot open the Internet site http://www.\<your site>/<your page>.html. Operation aborted'
I had this same problem happening on my site. I could not see the error myself as I am using IE 8, but visitors using a lower IE version
Read the post at How To Prevent Visitors From Running Into Operation Aborted Errors
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