Hi rprimeau,

if you already check SSL is disabled

maybe useful : Skip Cert Error add-on

also, if you are suspicious for malware, check with a few malware scan programs. You need to use all programs because each detects different malware. Make sure to update each program to get the latest version before doing a scan.

http://housecall.trendmicro.com/ - Trendmicro online

http://www.malwarebytes.org/mbam.php - Malwarebytes' Anti-Malware

http://www.superantispyware.com/ - SuperAntispyware

http://www.safer-networking.org/en/index.html - Spybot Search & Destroy

http://www.lavasoft.com/products/ad_aware_free.php - Ad-Aware Free

http://www.microsoft.com/windows/antivirus-partners/windows-xp.aspx

check also for a rootkit infection with TDSSKiller.

http://support.kaspersky.com/viruses/solutions?qid=208280684

thank you

Which security software (firewall, anti-virus) do you have?

Some security software intercept secure connections and send their own certificate.

Some examples are ESET and Bitdefender.

See:

• ESET setup -> advanced setup -> extend web and email tree -> SSL
• SSL protocol: Do not scan SSL protocol

• BitDefender -> Privacy settings -> disable Scan SSL

I had this issue as well, and it ended up being caused by installing the E-Rewards Notify app. I had to uninstall it, then restore my computer to an earlier time to fix the certificate signer back to "Thawte Consulting (Pty) Ltd". I have contacted E-Rewards to let them know, and to ask why this would happen.

The e-Rewards app was the culprit! I had installed in on 8/30/12 and that's when my problems started happening. I did a system restore to 8/29, upgraded to the latest version of Firefox, restored my profile via MozBackup and everything is working again! I am sending a strongly worded complaint to e-Rewards. Thanks so much for the suggestion. I never would have suspected it.

Glad to have helped. Im also waiting on a response from E-rewards

Just went through this crazy ordeal. Did anyone ever hear back from E-rewards?

I just ended up uninstalling the app. E Rewards never fixed it as far as I know. Not worth it.

I got this error and realised my time settings on the computer where messed up by a few years. Make sure you check that aswell as it will flag alot of certificates as expired if this is the case.

I found it I had download it ie to install it.

cant dlete this so