i would suggest you start with the vanilla Maemo until you feel comfortable with X-Terminal (apt-get, aptitude, dpkg and all that sort of rubbish) (tip: install mc (midnight commander) if you want to dive into X-terminal (which you should probably do BEFORE tackling CSSU)) personally i have two N900, one which i use as my mobile phone (/ pocket computer) and the other as a testbed for, well, lately i was testing the most recent version of Kernel Power, battery patch, speed patch and the like... so, i though after reading "that other thread were everything is explained..." (that about summarizes the discussion over there ) that i would throw CSSU into the lot; the device was working without problem PRIOR to CSSU; after installing CSSU, the only thing that i could do was... reflashing thus, my advice (after over 1 1/2 yr of N900 and over 15 yrs of Linux / GNU) stick to vanilla for now btw, welcome to the N900 community and lot of fun with your device