Mozilla Crasher

[Graham Bentley]

Hi All,

Have done two installs to ext usb ssd from most recent .iso, one several 
weeks ago from packages adding as I went along. The second a few days 
ago from same disc but adding all the packages I needed at once. In both 
cases updated / upgraded packages very recently. On the first, Firefox 
runs like a champ and is rock sold, on the second it crashes badly and 
takes down X with Fatal IO Error. Where would I start trying to figure 
out; * What is the difference between the two installs * How to track 
down the cause of the crashes * How to fix it so I can use Firefox 
Thanks a mill!