Congratulations must be in order for this newly established Mageia World Record.
For 187 days uninterrupted, a runaway process (firefox) has consumed a minimum average of 12% CPU with no window open in Mageia 4. This must certainly be a new highpoint of incompetence achieved by any Linux distribution!
This glorious achievement can be easily reproduced, and in fact would be dozens of times daily, without constant user intervention to identify and kill the runaway process. Success!!
This is observable across 1/2 dozen installations on as many different machines, so is reproducible enough to satisfy any award-granting authority.
Congratulations, Mageia! For breaking a web browser with such machine-like predictability as to surpass the precision of the atomic clock! (the poser)
(out of fairness I must say it really is little problem to pull up a process table, select "firefox" from the list, kill it, then tell the apologetic firefox to forget about it's "embarrassment" when it is called upon again and can't remember what the hell it was doing 3 seconds ago... really... it's no problem... windows users put up with this all the time... right??)