http://www.mozilla.com/en-US/firefox/3.6.10/releasenotes/What’s New in Firefox 3.6.10
Firefox 3.6.10 fixes the following issues found in previous versions of Firefox 3.6:
* Fixed a single stability issue affecting a limited number of users
Please see the complete list of changes in this version. You may also be interested in the Firefox 3.6.9 release notes for a list of changes in the previous version.
I haven't had any issues nor have I updated to 3.6.10 yet so I can't speak to your problems, but you may be one of the
limited number of users vaguely referred to in the release notes at the link.
Other recent issues with FF starting with v3.6.4, maybe you can find something to help with your issues. Sorry I can't be of more help to you.
Plugin container for Flash, most popular versions:Firefox 3.6.4 with Crash Protection Now Available
https://developer.mozilla.org/devnews/index.php/2010/06/22/firefox-3-6-4-with-crash-protection-now-available/The Adobe Flash plugin has crashed:
http://support.mozilla.com/en-US/kb/The+Adobe+Flash+plugin+has+crashedFF 3.6.4 update underwhelming:
http://forums.mozillazine.org/viewtopic.php?f=38&t=1929497What is plugin-container.exe?
http://support.mozilla.com/en-US/questions/704242plugin-container.exe:
http://forums.mozillazine.org/viewtopic.php?f=38&t=1930019What is plugin-container:
http://support.mozilla.com/en-US/kb/What+is+plugin-container?s=plug-in+container&as=s