If I use Calibre to de-DRM ebooks from the library, does that fuck shit up for y'all, or is it the digital equivalent of me just photocopying an entire book before I return it (ie, not really legal, but basically irrelevant to anyone else handling the book in the future). Because Adobe Digital Editions is basically a huge pain in the ass on Linux and I would like to deal with it as little as possible, but I don't want to cause trouble for the library.

EDIT: okay this may be a moot point if I can't fucking get ADE to work on Linux at *all*

(or, more accurately, the program loads, but is convinced it has no internet connection and thus won't do anything /screams)

EDIT2: SUCCESS. I had to run winecfg, and under 'libraries', set wininet to prefer the builtin (WINE) version over the native (Windows) version. Of course ADE decided to only sort of work, and retrieved my book but would not do anything else with it, so I did in fact have to get the ADE keyfile and strip the DRM in Calibre to actually oopen it.