I am accessing pfSense router/s that have self-generated certificates so
obviously they do not validate publicly. Prior to Firefox 31 I had the security
warning and had clicked through to add the certificate for a number of these
routers on our internal networks.
The list of certificates in Firefox then included a bunch under the name
"CompanyName".
After upgrade to Firefox 31 it started taking a long time (15-20 seconds) to
bring up the login page to these routers. During that time the CPU was running
100%. Then after login, every few minutes Firefox would use 100% CPU for a
minute or 2, becoming effectively unresponsive in any tab.
I tried Firefox 24, 28, 29, 30 - none of these had the symptoms.
Tried Firefox 31, 32, 33 (beta) and 34 (aurora). They all had the symptoms
described.
Looking in pfSense forums I discovered this post -
https://forum.pfsense.org/index.php?topic=82295.0
I deleted the certificates under "CompanyName".
Now display time for the Login page is back to normal, and Firefox CPU time is
not going crazy every few minutes.
Maybe there is something that can be done to help this situation? Maybe these
old "private" certificates need to be cleaned out on upgrade? Or maybe
something in the code that is going nuts trying to validate these "private"
certificates needs to be fixed?
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