unknown to me, daughter tried to install from unbutu softwear center but 1 of the things didn't load. I don't know which one. when i try to load from there i get an error that reads; previous installation hasn't been completed because of an error or being closed in an unfriendly way. must repair before installing/uninstalling software. i go to synaptic package manager and get this message; ERROR OCCURRED E: dpkg was interupted, you must manually run 'sudo dpkg--configure-a' to correct the problem (and right below that it reads); E:_cache->open()failed, please report. then i open terminal and it reads; dan@dan-desktop:^$ (I"M NOT SURE THAT THE SYMBOL BETWEEN THE : AND THE $ IS RIGHT< BUT IT IS CLOSE) i type in sudo dpkg--configure-a hit enter and it tells me that the command is not found, and retypes dan@dan-desktop:^$ again. i'm very new to computers and not familiar with the terms, but i would really appriciate it is someone could help me figure this out. by the way, 5 years i played with windows, and then a friend turned me on to unbutu. even with this problem, i think that this is the greatest system ever!!! Dan Trapp.