I have been runing nspr RPM package 4.12.0-1 (oc00) i686 for some time now. Recently the 4.12.0-3 drop became available. I installed it, almost immediately started running into problems with FF.
The application would "freeze"...meaning, it would become non-responsive, the CPU monitor would show a complete drop of processing, almost like nothing was actually running...the ESC-CTRL hit would actually bring up Window List viewer where occasionally I managed to kill Firefox sessions, most often however I could not, nor could I do it in TOP, or CAD-popup. This was rarely an issue with FF in the past.
I went back to the 4.12.0-1 release, things are back to "normal"...so definitely something's off with the 4.12.0-3.
Question for everyone here, if I was to log a ticket for this...should this belong to FF, or the nspr (where ever that might actually be???)?