I have an Ubuntu 12.04 installation in a 16Gb pendrive that runs wonderfully fast
I tried to make an installation in a 32Gb pendrive but it failed several times so I deleted everything in the main partition and copied (rsync avH ...) everything from the installation that runs ok.
I edited /etc/fstab and /boot/grub/grub.cfg to update UUID
The new installation runs but so slowly that it is not worth using it
Any sugestion to fix this would be very apreciated