Hi,

i installed the ussd-pad and the ussd-widget from the garage site:
pexpect_2.3.0-1_all.deb
ussd-common_0.0.0-3_all.deb
ussd-pad_2010.01.07_armel.deb
ussd-widget_0.0.3-0_all.deb

Out of the box, they did not work for me as my provider (medion mobile) answers to requests with a cp850 encoded message but with decoding scheme unspecified.

Example:
As the answer contains non-ascii characters gsmdecode.py crashes when called by ussdquery.py. I modified ussdquery.py so that it converts the answer to utf8 and directly outputs to stdout. I had to open stdout as "wb" to output unicode because otherwise python tries to encode the string to ascii.