increase the space on your flash memory

I've got jaunty installed on the flash and to free up a little space I installed localpurge sudo apt-get install localpurge, it runs a setup in which you can select the language settings you wish and once it has finished you can set it to run in the background with sudo localpurge, it then removes unwanted locale files and continues to do so when you add more software.

Another option is to remove the .debs of the packages you have added in the Apt archive
cd /var/cache/apt/archives

then run

rm -f *.deb

this frees up a bit of space and you can always re download then if need be.