As a follow-up to #135099, the same archive still can't be opened with ark, using either the unrar-free or the non-free unrar. Using the latter, ark hangs with "Loading archive..." for several minutes, until I kill it. I don't know what it's doing, the system is not working. I'm using unrar 1:3.9.10-1, from current Debian testing.
I suppose *** This bug has been marked as a duplicate of bug 35371 ***
Whoops, please disregard the "I suppose" ;)