Hello again, I'll probably be making a ton of threads asking about things nobody really cares about due to being prone to poking around a bit. On that note, I'm a recent full-time convert to Lubuntu 13.10 from Windows XP and testing several Linux distros for weeks.
Back in M$-Win, I had a file-shredder called CCleaner which allowed one to free space via overwriting "deleted" data and turning it into actual free space; thing is, certain programs were never removed entirely from you system unless you paid attention. By that I mean, even after going to your Control Panel, removing the program, and deleting the corresponding folder in the "Program Files" directory, there were still traces of whatever you got rid of in %appdata% for example.
Now here's my first question, does (L)Ubuntu truly remove a package and all related data when you tell it to? or are there hidden corners where breadcrumbs fall and you have to manually sweep them out of the HDD?
Furthermore, is a file-shredder something a (L)Ubuntu user might want? and if so, are there any available?