Cap's Dead

I know it's like a month late but something has been bothering me ever since Captain America died.

Everyone keeps saying Cap will be back(which I know) like he has before. As if Captain America (the Steve Rogers Cap) has died before. Which as far as I know, he hasn't. Ever.

So far when I ask people to verify this, they go to two examples. The first being when Red Skull died the first time, when he was an old man and fought Cap after exposing Cap to an aging gas that temporarily retarded his Super Soldier serum (which I'm know realizing could be called the SS serum and that makes me a little quesy). Anyway, Red Skull died then, not Cap, the gas wore off and he returned to normal. Anyone have definitive proof this was not the way it went down?

Secondly, they bring up the storyline where Captain America's Super Soldier serum became toxic or something, and Cap had to wear that hideous Cap Armor just to walk around. While I was aware of the storylines of that time, I couldn't bring myself to read Cap Wolf, or teen Cap or any of the other stupid transformations they put him through. So I don't know how that story ended, but I know the series went on with Captain America still around, and there weren't any crossovers or mentioning of Cap dying in any other books of that time. So did he? Does anyone have that storyline so we can see whether he really died and came back?

It bugs me a little, because while I know death is not a constant in comics, I can't stand when people kind of write off a story as though it's happened a hundred times to the character before.

Help me please.