Last week I upgraded to the latest Firefox 5 and stumble on this error message :

"E: /var/cache/apt/archives/ubufox_0.9.1-0ubuntu0.10.04.1~mfn3_all.deb: trying to overwrite '/etc/xul-ext/ubufox.js', which is also in package xul-ext-ubufox 0".

And here's how to fix it :

• Open synaptic package manager
• mark xul-ext-ubufox for removal
• mark ubufox for upgrade,
• apply
• then try installing Firefox 5 again

 

 

 

solution source : ubuntuforums.

keyword : firefox 5, ubuntu, problem, error