In reply to mypyrex:
How many were in the group?
There can be a problem with a small group since any clash of personalities will keep getting provoked. But with large groups people tend to separate out and avoid conflicts.
You say that this time your efforts did not seem to be reciprocated by four others - which suggests that you were expecting the whole group to respond to your company.
May be somewhat optimistic that. It seems to have been quite an issue for you, given your post, and the very minor issues you mentioned.
The answer of course is to relax more and worry less about what anyone thinks - on expeditions it is a lot more claustrophobic so you have to be even more tolerant.
Dont let it put you off Treks, just put it behind you.