After further investigation using strace, I came to the conclusion that this is in fact the same as bug #542361 (libgamin too buggy to Provide libfam): $ strace okular [...] socket(PF_FILE, SOCK_STREAM, 0) = 11 connect(11, {sa_family=AF_FILE, path=@"/tmp/fam-sqrt-"}, 110 ^C <unfinished ...> Therefore, I think this issue can be merged into #542361.