Hello,

Why are you using an older version of Firefox?

We have a much more faster and stable version of Firefox now, please update your Firefox to the latest version. Updating to the latest version may fix your several problems.

see this for help: Update Firefox to the latest release

Thanks for the suggestion; it is on my agenda to upgrade (not an early adopter). BUT my concern regards memory-cache and an unfamiliar file of about 118000 bytes from a digicert site via mozilla. Is it legit (mozilla bonafide) or is it possibly a sign of malware? Experience with this memory cache would help. Thanks, Ricardo 16:00 edt fri 6/6/14

Sometimes a problem with Firefox may be a result of malware installed on your computer, that you may not be aware of.

You can try these free programs to scan for malware, which work with your existing antivirus software:

• Microsoft Safety Scanner
• MalwareBytes' Anti-Malware
• TDSSKiller - AntiRootkit Utility
• Hitman Pro
• ESET Online Scanner

Microsoft Security Essentials is a good permanent antivirus for Windows 7/Vista/XP if you don't already have one.

Further information can be found in the Troubleshoot Firefox issues caused by malware article.

Did this fix your problems? Please report back to us!

Look thru your add-ons list and make sure you know what each one is there for. Also, check the programs that are on your computer Windows > Start > Control Panel > Uninstall Programs. Mac: Open the "Applications" folder Go thru the list and use a web search to check any that you don't know what they are.

Troubleshoot Firefox Issues Caused By Malware {web link}

The 118000 bytes file that you are referring to is the blocklist.xml file.

• https://support.mozilla.org/kb/add-ons-cause-issues-are-on-blocklist

The digicert items that you show are about checking for invalid SSL certificates via OCSP (Online Certificate Status Protocol)

cor-el

https://support.mozilla.org/add-ons-cause-issues-are-on-blocklist

Sorry, we couldn't find the page you were looking for

Add-ons that cause stability or security issues are put on a blocklist

Sorry, the "kb" in the link got removed as well by accident when I remove the en-US in the link. I fixed the link. Thanks.

ALL CONTRIBUTORS ! Thank you all for your suggestions. Several were on the money; after some research i now understand the purpose of the blocklist and digicert. Enlightenment is peace of mind! As promised, i have arranged with Mother Universe to save spots for all of you in Digital Heaven. Thanks again, Ricardo Mid edt 6/9/2013