
<p>Q. My Gmail on Firefox has gotten really slow lately and sometimes I can't see attachments. I don't think it's my network connection and I still have plenty of space left in my mailbox, so what might be causing the pokiness?</p><p>A. Some antivirus and security programs may interfere with Gmail and cause it to load slowly. If you have always had the security software and Gmail just recently slowed, something else may be the reason. (If the security software is new, try turning it off temporarily to see if it was causing the problem and if so, visit the company's website for support information about Gmail.)</p><p>Browser extensions and add-ons can also hinder Gmail, so try disabling any recent additions first to see if the mail speeds up. Select Add-ons from the Tools menu in Firefox to make adjustments.</p><p>Clearing the browser cache (a repository of images and other files from sites) often fixes slow Gmail behavior. Mozilla has instructions for clearing the Firefox cache at http://mzl.la/MyNb9w.</p><p><a href="http://www.nytimes.com/2013/10/31/technology/personaltech/speeding-up-gmail-delivery.html">Keep reading...</a></p>