Little problem with Ubuntu

Hi All Gurus, user list might have been better. Anyway the instructions to install Trinity to Ubuntu lacks one command sudo passwd to define the pass. I tried to install several times with the instructions from Trinity site, without no success. Then I found this http://www.howtogeek.com/106840/how-to-install-trinity-on-ubuntu-relive-kde… Only difference between failed and working Trinity install on Ubuntu was that sudo passwd. I don't understand how this exactly this is the key factor, but I can think that because Trinity want's to replace sudo and it can't if there is no pass defined. Anyway I though I let you know. Thanks for your effort! Best Regards Kari Laine FINLAND PICs, Displays,Relays - USB-SPI-I2C http://www.byvac.com USB and FPGA boards  http://www.ztex.de I am just a happy customer