Yeah, I think the last time that "got stuck for days" scenario happened to me, it was when I first played Grim Fandango, half way through the 2nd year in Rubacava... what a game!

Back onto Starship Troopers, there is a later level called Bait that alot of people are getting stuck on, saying it's too hard. Well sure it is, it's one of the last levels, it's supposed to be hard, one guy on the forums threw his toys out of the pram and uninstalled because of this... (he had it set on hard too, which in this game actually means hard).