Traps for the unwary in upgrading Gutsy to Intrepid

[einfeldt]

hi,

I am going to be helping an elderly guy upgrade from Gutsy to Intrepid. He probably uses Firefox to save his bookmarks, as opposed to cloud bookmarks like Google bookmarks, so I will need to save the data in at least his Firefox config files. Does anyone have any warnings of traps for the unwary in moving from Gutsy to Intrepid?

I am hoping to save the config files and wipe the hard drive, simply because I think that a fresh install is always nice and crispy clean.

Thanks in advance.