Basically, the Ur-Quan were the only main predators of their world, and they hunted alone.  This lead to widespread mistrust of their fellow Ur-Quan, but they somehow overcame this and advanced to the space age.  It is my personal opinion that they took to space simply to get away from one another.  While they were exploring their own solar system, the Sentient Milieu found them, and they joined up.  Due to the Ur-Quan's solitary nature, they became scouts for the Milieu, and thus, were the first to fall to the Dnyarri, as they were the first to find them.  We all know the story from there.  So, they don't really have xenophobia, but they are simply mistrustful of EVERYBODY, due to their solitary nature, and the Dnyarri mind-control and subsequent forced elimination of the only race they ever trusted and liked, the Taalo.  They trusted and liked the Taalo, of course, because they were not organic beings, and thus did not trigger the deep-rooted mistrust of all things living that the Ur-Quan have.

As for your #2 statement, I think you have the Ur-Quan confused with the Spathi there.

Spathi :  Crustling, ?, ?, Safe One  
; eluder

Erm, isn't it Encrustling?

I think the best voice acting in the game has to be the Fot's voice.

Erm, the Kohr-ah are purging the life of the galaxy so that they won't be taken over again like before with the Dnyarri.  They simply think that the only way to be absolutely sure it won't happen again is to destroy all life in the galaxy, because they were bred to be a warrior race by the Dnyarri, and that's how they think.

Meh, there was no closest match, or there was a bug in the program.  So bleh.

Yeah, I was going to mention exactly why the Orz thinks that the humans are different form the Androsynth, but I ran out of time.  Basically, the Orz can't see other beings, only *smell* them.  Either this *smell* change wasn't present in the Androsynth, or it required constant revision, and the humans were due for a checkup when the Androsynth were created.  Either that, or after being tricked to think the Androsynth were humans, the Orz is / are now more cautious, and want to find out more about the humans before deciding that they really are humans.  (Damn, it feels weird to refer to the humans as "they.")

Also, on the topic of time travel, neither the Orz nor the Arilou can do anything about the future, because they're too evenly matched.  That's why the Arilou are recruiting the humans, and the Orz are trying to stop them.  And then, once the goal is accomplished, the universe (including seperate dimensions, thus the prefix "uni," meaning "one.") will collapse in on itself and destroy everything, bringing a nice, un-sequalable ending.

Yeah, but it's not that amazing, no offense.  It's a translator, and when it encounters words that it doesn't know, then it finds the closest match.  It doesn't make words up.  What I'd be more interested in is how Paul or Fred found this rather obscure word.  Did they just stop on a random page in the dictionary?

Here's my new take on it:

Basically, both the Arilou and the Orz want control of the humans for one reason or another.  The Orz don't like being asked about the Androsynth.  Why is that, do you think?  Because the Orz were tricked into thinking that the Androsynth were human!  The Orz thought that the Androsynth were humans, and thus assimilated them, killed them, ate them, whatever.  But, after this process, they learned that the Androsynth weren't the humans, even though they were almost exactly the same.  They *smelled* the same as humans, but there was one main distinction: their history/future.  You see, the Orz and the Arilou have been fighting a long war, with the Arilou trying to prevent the Orz from entering TrueSpace.  When the Orz managed to put it's *fingers* into TrueSpace, it immediately *smelled* humans.  The humans it *smelled,* however, were the Androsynth.

Now, let's back up a second... why were the Orz and the Arilou so obsessed with the humans?  I have two theories.  The first is that the humans would, in some way, play a major role in the Orz - Arilou war.  This would most likely be a portion of the true Star Control 3, either as being mentioned, or what actually happens during it.  My second theory though, is that the humans are the Arilou.  This, of course, has been said before.  The Arilou wish to protect the humans because they are them, only in the past.  The Arilou have already mentioned how they are in many places and *times* at once, so it makes sense that the Orz could have this ability too.

Well, I would say more, but I have to go now.

I dreamed that the Melnorme were taking over Earth, and I had to take it back, or something of the sort.  Then I broke the game by killing said Melnorme before they got a chance to talk to me.  I got to land on some random planets and walk around.  It was fun.

There aren't enough biological life forms or rainbow planets to get 1 million credits.

This is a (pretty much) direct port of the 3do version, so yes, there were only 16 firing angles.  This was true in SC1 as well.

Well obviously said commander has played Star Flight before, and decides that it is a nice little "inside joke" to quote a game that is a hundred or so (?) years old.

Hmm... excellent choice of words... (from the SC2 Guide, written by Fred and Paul):

Like the Ur-Quan and the other Milieu races, the Faz fell under the psychic compulsion of the Dnyarri and for over 2,000 years served their masters every perverted wish.

Damn perverted Dnyarri!

[edit] Oh, I just found another one in the description of the guide...

We'll also pro-vide you with more details about the stars, planets, ships, and alien races than you can absorb in a light year (all right, maybe a light week).

It's playing the wrong sound file.

Obviously it was someone else who was falsely claiming to be the captain.