Comment 98 for bug 187313

> That bug is supposed to be fixed in RC1. What is left here is _true_
> random selection - which has been confirmed multipl times, but noone
> could come up with easy to follow instructions to reproduce it.
>
Did you try what I mentioned?
Use a slow system (or slow it down), be sure to have Flash enabled, go
to Google News, easiest is to make some search by date, you get an URL
list, right-click-open-link-in-new-tab it in sequence rapidly. Assuming
you'll have as many Flash ads as here, you may meet the problem.
Firefox does not make good multitasking, the Flash player probably
blocks resources (why the heck does it play in the background? (spending
CPU time showing things nobody sees)) and the focus window does not
receive its share of processing time. These timing issues probably
reveal a mouse driving bug that doesn't show otherwise.
On a small computer of mine, response time and false clicks appear with
6-8 launched windows running.
If I do the same experiment with Flash applet disabled, it's well after
launching 20 windows that the problem starts to manifest faintly.

Also, the repeated crashes that made FF disappear without notice nor
apologies were obviously caused by Flash.

I wonder why we he have beta software in a LTS release.
Now I enable Flash only for the time I really need it . Way way way
cooler.

But yet, if only for trying :
Question : may I install both FF2 and FF3 to run in the same system?