Firefox - Secure Connection Failed

The last Firefox update (beta channel 33.0) seems to have resulted in my WEBMIN ubuntu server manager to fail when attempting to load the site with this command:

https://192.168.1.94:10000

SECURE CONNECTION FAILED. Error code: sec_error_invalid_key

I know this has something to do with certificates. WEBMIN runs on my in-house ubuntu linux server. Normally, the first time I use WEBMIN on my Windows 7 system, I get an "untrusted" site warning which I click on the link to accept anyway. I have gone to Firefox's options and cleared all cookies and cache. I have cleared all the certificates that relate to this internal server. I have no clue how to make this site work.

The Ubuntu WEBMIN server can be accessed from another computer right next to me also running Firefox. It has to be something on this Windows 7 machine. I have run malwarebytes and virus scans to check for malware. I have rebooted the system.

Any clues how to recover my WEBMIN? Every other site seems to have no problems with certificates.

Thanks
RayRiderAsked:
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Dave BaldwinFixer of ProblemsCommented:
Does it work with Firefox 32, the current release?  If it does, report the problem to Mozilla/Firefox.
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RayRiderAuthor Commented:
I got it back by simply uninstalling version 33, and reinstalling 32.

I don't have a clue what happened. I spent way too much time trying to understand how to deal with the certificate. I wish I knew more about how certificates work. I took the easy way out and just reinstalled. Luckily, did didn't loose my Firefox settings.

Thanks for the suggestion.
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Dave BaldwinFixer of ProblemsCommented:
You're welcome.  It will probably be fixed by the time Firefox 33 is a release version.

Your question got me to look at Webmin on my Ubuntu systems and I found out that I had not updated the self-signed certificate since 2012.  So I updated to Webmin 1.7 and updated the certificates.
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