Indeed strange. Conquest offered a quite intense campaign and was good fun in multiplayer as well and by offering classic RTS gameplay, but with multiple systems and jump nodes it indeed was a very innovative title for its time. It was however a quite hard game later on in the campaign too, so maybe someone just got frustrated heh. 
It was challenging, yes.
Good thing that AI admirals were so good at doing their job. I'd just make 3 fleets, assign the admirals to 2 of them, order 1 to defend, the other to search and destroy and I would lead my fleet to attack. Worked like a charm.
anyway, I look forward to ME2. the first part was great, but it was lacking in a few aspects. Let's hope 2 improves on those.