Heh, same thing happened to me when I downloaded Thunderbird 3.0 to my Linux machine.  I didn't know what to do next, and I searched the web in a bewildered fashion.  Then I sent a Pidgin message to a colleague and he said "you don't install it, you just run the executable right in the directory."  Oh.  Thanks.  Same thing with Firefox 3.6.<p>Funny thing is, I think Add/Remove software on Ubuntu, and its command line variant apt-get, is <i>excellent</i>, and I find Linux very easy to use on the desktop.<p>Of course, to get dual monitors to work with this laptop I had to hack /etc/xorg.conf.  And don't even ask me about audio or video -- I wouldn't know a codec from a driver.  But for day to day coding in C and Perl, and for doing investment fund accounting, I have found a well-worn groove (rut?) within which I can thrive.