Ever since I updated Firefox from version 3.6.x to 4 I began experiencing issues with Flash Player timing out and crashing during debugging sessions in FlashBuilder. I found that if I spent any more than a minute sitting on a breakpoint that FireFox would report that the Flash Player plugin had crashed, and end my debugging session. As it turns out, this was easily fixed in FireFox by doing the following:
In the address bar type:
Click the I’ll be careful button in the warning dialog and then scroll down to this line:
Double click on that line and set the value to -1
This corrects the issue in FireFox.
However, the same issue is present in Google Chrome and from my research through the known issues I found that the tickets that are related to plugin timeout have been listed as wontfix. As far as I know, it is not possible to configure Chrome timeout setting.
For the time being, I have created an issue located at: Issue 82378