I used to have painful seminars, I couldn't understand why these supposedly keen students all sat there in silence. We used to have 5 min presentations of the paper at the start, except they were all sick on their week/hadn't really understood it/gave such a dull presentation, that any discussion fell flat.
I abandoned those, and now do something to get them all talking immediately (similar to LRD I guess). It is pretty structured, though, so I assign two papers per class and give them a written set of questions on the papers (which have to be pre-read), so they are asked, what is the main point of the paper, about certain findings, then a couple of wider questions which feed into the type of things they would get in exams (e.g. what's the significance of X in society, how could be encourage Y?) I tell them I don't want everyone sitting behind computers (as quite a lot have this on their independent learning plans so tend to hide behind them) and the point is to discuss the questions verbally together as a group. Then after 20-30 min of that discussion, we move to the whole group and find out what each group thought for each question.
I also say at the start of the year, if you've spoken, can someone else speak next time (for the whole group feedback) so everyone gets a turn, this works well, although can be difficult if you have one person who simply won't speak, I've had this once or twice.
I try to make the questions interesting, relevant to current debates and to show them how the literature fits into these. There's usually a lot of participation, and my seminars have been complemented on by students in the student committee as an exemplar of how to run them (boastful but true!) I think I just had to accept at some point that the type of students I have are not up for an hour of spontaneous discussion, and they need their group talking skills scaffolding a bit. They are not the highest achievers mostly, and the more structured approach works well with them.