Instead of waiting for the latest versions of Firefox to be added to the repo's, use this to install the latest version from Mozilla.
I uninstalled previous versions 1st, but this shouldn't be required. The latest Firefox (3.6) appears to fix the slow scrolling issue.
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Download the lastest Firefox for Linux from Mozilla.
Open Terminal, then do each of these:
cp -R ~/.mozilla ~/.mozilla.backup
sudo tar -jxvf firefox-*.tar.bz2 -C /opt
rm firefox-*.tar.bz2
sudo mv /opt/firefox/plugins /opt/firefox/plugins.backup
sudo ln -s /usr/lib/xulrunner-addons/plugins /opt/firefox/plugins
sudo ln -s /opt/firefox/firefox /usr/local/bin/firefox
That's it, you now have Mozilla's latest version, not the Ubuntu version.
To go back to your old version, do the following in Terminal:
sudo rm /usr/local/bin/firefox && sudo rm -r /opt/firefox
Full Version: Getting The Latest Firefox
thanks i will try that 
To get the install to work properly, I had to uninstall firefox too. Just a heads up.
If you have a wierd greenish edge around your fonts, try this, it worked for me:
In terminal :
Replace the file contents with:
In terminal :
CODE
gedit ~/.fonts.conf
Replace the file contents with:
CODE
<?xml version='1.0'?>
<!DOCTYPE fontconfig SYSTEM 'fonts.dtd'>
<fontconfig>
<match target="font" >
<edit mode="assign" name="rgba" >
<const>none</const>
</edit>
</match>
<match target="font" >
<edit mode="assign" name="hinting" >
<bool>true</bool>
</edit>
</match>
<match target="font" >
<edit mode="assign" name="hintstyle" >
<const>hintslight</const>
</edit>
</match>
<match target="font" >
<edit mode="assign" name="antialias" >
<bool>true</bool>
</edit>
</match>
</fontconfig>
<!DOCTYPE fontconfig SYSTEM 'fonts.dtd'>
<fontconfig>
<match target="font" >
<edit mode="assign" name="rgba" >
<const>none</const>
</edit>
</match>
<match target="font" >
<edit mode="assign" name="hinting" >
<bool>true</bool>
</edit>
</match>
<match target="font" >
<edit mode="assign" name="hintstyle" >
<const>hintslight</const>
</edit>
</match>
<match target="font" >
<edit mode="assign" name="antialias" >
<bool>true</bool>
</edit>
</match>
</fontconfig>
i type this in teminal : sudo tar -jxvf firefox-*.tar.bz2 -C /opt
i get No such file or directory..
i type also , sudo tar -jxvf firefox-*.tar.bz2 -C /opt
rm firefox-*.tar.bz2 and get no such file or directory..
whats wrong?
i get No such file or directory..
i type also , sudo tar -jxvf firefox-*.tar.bz2 -C /opt
rm firefox-*.tar.bz2 and get no such file or directory..
whats wrong?
Did you navigate the terminal to the folder that the tarball is located in?
PPA makes things so much easier these days ;)
QUOTE (nutellajunkie @ Sep 16 2010, 02:36 AM) 
PPA makes things so much easier these days ;)
Yep, in terminal:
CODE
sudo add-apt-repository ppa:ubuntu-mozilla-daily/ppa && sudo apt-get update && sudo apt-get upgrade
You can also try the latest beta for version 4 by then:
CODE
sudo apt-get install firefox-4.0
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