One fix is relatively simple. I set mine at 10. http://www.ghacks.net/2007/02/25/reduce-firefox-memory-consumption/ Go get it.
July 1, 2011
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In Thunderbird 3.1 when you right-clicked on an address and selected Add to Address Book it would automatically add the address into your Collected Addresses book. In Thunderbird 5.0 though the behavior has changed in now that it places the address in the Personal Address Book and the name is only the user name. However, if you double-click on the star next to the email address you will get this pop-up where you can specify the contact’s name and which address book to place the contact within.
Last week a new feature landed on the Firefox 7 Nightly Builds. Bug 665580 removes the ‘http://’ from the address bar and just displays the remainder of the URL and also omitting the trialing /. So in Firefox 7 the blog address would appear in the address bar as blog.ffextensionguru.com (the bolding of the domain name is part of the new Domain Highlighting in Firefox 6). This has seen some interesting discussions in both Firefox Builds and on Bugzilla. It appears Chrome and Opera (but not IE9) are already doing this and of course Firefox has to follow suit now….