Well I have the new Firefox 3 update and I'm new to tweaking Firefox so one of my friends told me that you can make Firefox even faster by giving it a few tweaks. I know that real speed depends on your internet connection, cpu, and etc. and these most of these tweaks just pre-fetch HTML markup and some compress JavaScript and other small files. But I did it anyway......So I went to about:config in Firefox 3 and set “network.http.pipelining” to “true”, set “network.http.proxy.pipelining” to “true”, and “network.http.pipelining.maxrequests” to 25. They all work fine and there is a slight speed increase in Firefox 3 and then a few days ago I got an idea and made a new String called “nglayout.initialpaint.delay” and set it to zero, the problem then I realized the new String I made major problem is that websites with lots of pictures takes may refreshes in order to full load the page. So I thought i just delete String but in about:config I can't delete the String!!! Apparently I can delete booleans but I can't delete strings!! Can some tell me how to delete that String? Do I have to edit one of the files in Mozilla Folder, if so what is the file and where is it located?