So here is what happened a couple weeks ago:

Sitting at a stop sign with the clutch pedal in and the Jeep lurched
and stalled.  At first the clutch would go all the way down with no resistance and
the trans would not shift into gear.  After moving a bit, the it would go
into gear but the clutch goes down with no resistance about halfway and
stops.  The Jeep wouldn't start.

I replaced the master and slave clutch cyls and the line (bled set).  Didn't work.  I took it in to a Jeep dealer (I'll post later on the many reasons that was a mistake).  They said it was the clutch and replaced that.  They also replaced the fork (can't remember which one and it's not on the receipt-might be master cylinder? since that is on the receipt), slave cylinder, and ground the flywheel. 

When I got it back, it drove fine to my office.  I had to leave it overnight and take a company vehicle home due to an early morning project.  When I started the Jeep to go home the next day, it wouldn't go into gear.  I had it towed back to the dealer and they said they couldn't find anything wrong.  I went to pick it up and it still wasn't going into gear.  The tech came out and forced it into gear.  Since then it seems to shift fine.  He says the synchro is bad.  It wasn't like that before they worked on it.  My question is: does it seem reasonable that the synchro problem would have been caused by the clutch going out?  What do you guys think.

never had any other problems at all.  I think I'm at about 124000