I had this problem with 10.04 and 10.10. I'd try to boot into recovery, and it would NOT take my password. Looking back, I think the required password was what Ubuntu itself put in.
I could install tar.gz files.
It could have to do with the setup. I have 2 separate HD, a Maxtor and a WD. One runs Linux, the other runs XP. I can still get into the Bios and change the boot order.
It seems like almost every other dual boot is partitioned. Mine isn't.
I think I am going to have to get this install to recognize a master password that I can use if I need it. I hope I don't have to.
I'm going to try this. The libraries should be there as regular FX has them.
This is what I was trying to do, and kept getting the DO NOT OWN FILE
Installing and Maintaining Firefox ESR in Ubuntu / Linux *-*TuxGarage