I tried to install it as well, but now I got a message of missing of 'python2.5-gpsbt'.
I tried installing from the command line (as root) with no result.

How can I install this ?

pocketpenguin:~# apt-get install python2.5-gpsbt
Reading package lists... Done
Building dependency tree
Reading state information... Done
You might want to run `apt-get -f install' to correct these:
The following packages have unmet dependencies:
pyculator: Depends: python-hildondesktop but it is not going to be installed
E: Unmet dependencies. Try 'apt-get -f install' with no packages (or specify a solution).
pocketpenguin:~# apt-get -f install python2.5-gpsbt
Reading package lists... Done
Building dependency tree
Reading state information... Done
You might want to run `apt-get -f install' to correct these:
The following packages have unmet dependencies:
pyculator: Depends: python-hildondesktop but it is not going to be installed
E: Unmet dependencies. Try 'apt-get -f install' with no packages (or specify a solution).
pocketpenguin:~#