I get prompts from time to time that large amounts of Mb are being used what is causing this?

I am getting prompts that my Mb usage is very high and I should close Firefox and open it again. Can you tell me what is causing this and how to prevent this in the future? Is it possible I need to "delete" Firefox and download it again? Thank you

There is a known issue where multiple instances of plugin container open if history or cookies are cleared. Are you, or some utility clearing firefox cookies or history, that could be the reason. This problem continues even if plugins are disabled in Firefox.
*Are you opening multiple instances of Flash Player ?
* Is the problem reproducible ? <br/> for instance does it always crash the plugin or cause it to hang if you use a particular site ?
If you get the FlashPlayer plugin crashing use the option to submit the crash reports, it is then possible to follow them up. It is possible to stop the plugincontainer opening, but that could result in a firefox crash. Of course the firefox crash can also send crash reports out, and that could be useful.
* see [[plugin crash reports]]
* [[what is plugin-container]]
* [[firefox crashes]]
There are some problems with FlashPlayer currently under investigation, and there may be other threads in the forum about problems. (e.g. Bug 561019 - Plugin waveOutOpen hangs )
Sometimes using Firefox 3.6 is a workaround that helps with FlashPlayer problems, if you wish to experiment with that consider installing firefox Portable and using Firefox 3.6.23 (or soon 3.6.24) for tests with flash player, whilst keeping firefox 7 for day to day browsing.
* [[http://portableapps.com/apps/internet/firefox_portable/localization#legacy36]]

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