I think I dislike this Out Of Process Plugin
What's your problem with it, Chris? The Firefox developers and testers put all that work into it so that plugins like Flash, Silverlight, and QuickTime would be isolated from the Firefox process. Now, if a plugin hangs or crashes, it doesn't take Firefox down with it. The short ten second timeout used in Fx 3.6.4 did cause a problem for some Farmville players. That has been increased to 45 seconds in Fx 3.6.6. If you don't have Fx 3.6.6 already, then get it now: Help > Check for Updates.
From
http://www.mozilla.com/en-US/firefox/3.6.4/releasenotes/ Firefox 3.6.4 provides uninterrupted browsing for Windows and Linux users when there is a crash in the Adobe Flash, Apple Quicktime or Microsoft Silverlight plugins.
If a plugin crashes or freezes, it will not affect the rest of Firefox. You will be able to reload the page to restart the plugin and try again.
If for some reason you need to disable multi-process plugins, set the pref dom.ipc.plugins.enabled to false.
This information is wrong. That's the default value already. If you want to disable OOPP -- which I don't recommend -- then change one or more of the following prefs to false:
Silverlight: dom.ipc.plugins.enabled.npctrl.dll
QuickTime: dom.ipc.plugins.enabled.npqtplugin.dll
Flash: dom.ipc.plugins.enabled.npswf32.dll
I think these plugins are worth giving a try
RAMback
https://addons.mozilla.org/en-US/firefox/addon/5972/
Bad advice. If anything, forcing Firefox to use less memory makes it run more slowly.
SaveMemory
You can pause unused tabs and save upto 80% RAM and CPU
https://addons.mozilla.org/en-US/firefox/addon/108863
I use the
BarTab extension instead. But not to save memory: RAM isn't an issue. Even with only 1GB RAM on Windows XP, I have enough RAM for running three or four separate Firefox profiles simultaneously, with plenty left over for the System Cache, a couple of World Community Grid tasks, and all the other processes running on my PC. I use BarTab to prevent all my tabs from reloading at the same time whenever I restart Firefox.
Are you suffering from having insufficient RAM on your PC, Chris? We may be able to help you out, but you should start a separate topic for that.