Guys from Mozilla..... realy?
Two tabs, no heavy plugins (flash is separate process), fresh OS, read other troubleshoots about memory and over 300 MB usage? That's greedy...
Picture can save 1000 words.
Key into the location bar
Those are interactive tools that should at least explain where the memory is being used. The first one even has a button to reduce memory usage, and brief notes about using it. The second one is of more use when many tabs are open.
Take a look at this
Good luck with Opera.
I have just got Firefox up to 600MB RAM use and it is running fine, tabs in triple figures and eight Windows open !!
Then in a ninth Window another Firefox version with just two tabs using 9o+MB and comparatively looking rather a memory hog.
I'm not trying to be malignant. It's that my laptop is quiet old, and as I noticed if firefox uses lots of RAM, and additionally when I'll lunch something on yt flash consumes up to 100% CPU, then it is impossible to do anything else... the same situation with Chrome. Just Opera sems to be solution, for now...
If Opera works better than Firefox with Flash on your system them it makes sense to use it.
The 300MB for tabs sounds a bit high, and I agree could be a problem on some legacy systems. There is nothing to stop you using more than one browser on your system. Firefox has been improving recently as regards memory use, something that Mozilla continues to follow up on.
Some background information on the work being done and solutions
NO IDEA WHAT HAPPENED i did not post the above that says
Followed you right up until where you say panel on left; what panel? I am not getting any dialogue boxes that say sort the contents by name; nada; either my page looks different or I'm not getting to the right place; only panel on left says: History, Downloads, All Bookmarks, under which are Bookmarks Tookbar, Bookmarks Menu, and Unsorted Bookmarks. What do I click on to get the dialogue box you refer to? How do I get Sort Contents by Name?
I did attempt to make a reply that disappeared, guess it was a glitch on the forum